diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index b37bf24..bcc2c8c 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -118,7 +118,7 @@
                 android:resource="@drawable/ic_notification"/>
 
         <!-- FileProvider required for older Android versions (<= P), to allow passing the file URI in the open intent.
-             Avoids "exposed beyong app through Intent.getData" exception, see see https://stackoverflow.com/a/57288352/1440785 -->
+             Avoids "exposed beyond app through Intent.getData" exception, see see https://stackoverflow.com/a/57288352/1440785 -->
         <provider
                 android:name="androidx.core.content.FileProvider"
                 android:authorities="${applicationId}.provider"
diff --git a/app/src/main/java/io/heckel/ntfy/db/Repository.kt b/app/src/main/java/io/heckel/ntfy/db/Repository.kt
index ae978e7..c088938 100644
--- a/app/src/main/java/io/heckel/ntfy/db/Repository.kt
+++ b/app/src/main/java/io/heckel/ntfy/db/Repository.kt
@@ -5,8 +5,10 @@ import android.content.Context
 import android.content.SharedPreferences
 import android.os.Build
 import androidx.annotation.WorkerThread
+import androidx.appcompat.app.AppCompatDelegate
 import androidx.lifecycle.*
 import io.heckel.ntfy.log.Log
+import java.util.*
 import java.util.concurrent.ConcurrentHashMap
 import java.util.concurrent.atomic.AtomicLong
 
@@ -179,6 +181,22 @@ class Repository(private val sharedPrefs: SharedPreferences, private val subscri
             .apply()
     }
 
+    fun setDarkMode(mode: Int) {
+        if (mode == AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM) {
+            sharedPrefs.edit()
+                .remove(SHARED_PREFS_DARK_MODE)
+                .apply()
+        } else {
+            sharedPrefs.edit()
+                .putInt(SHARED_PREFS_DARK_MODE, mode)
+                .apply()
+        }
+    }
+
+    fun getDarkMode(): Int {
+        return sharedPrefs.getInt(SHARED_PREFS_DARK_MODE, AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM)
+    }
+
     fun getWakelockEnabled(): Boolean {
         return sharedPrefs.getBoolean(SHARED_PREFS_WAKELOCK_ENABLED, false) // Disabled by default!
     }
@@ -358,12 +376,17 @@ class Repository(private val sharedPrefs: SharedPreferences, private val subscri
         const val SHARED_PREFS_AUTO_DOWNLOAD_MAX_SIZE = "AutoDownload"
         const val SHARED_PREFS_WAKELOCK_ENABLED = "WakelockEnabled"
         const val SHARED_PREFS_CONNECTION_PROTOCOL = "ConnectionProtocol"
+        const val SHARED_PREFS_DARK_MODE = "DarkMode"
         const val SHARED_PREFS_BROADCAST_ENABLED = "BroadcastEnabled"
         const val SHARED_PREFS_RECORD_LOGS_ENABLED = "RecordLogs"
         const val SHARED_PREFS_BATTERY_OPTIMIZATIONS_REMIND_TIME = "BatteryOptimizationsRemindTime"
         const val SHARED_PREFS_UNIFIED_PUSH_ENABLED = "UnifiedPushEnabled"
         const val SHARED_PREFS_UNIFIED_PUSH_BASE_URL = "UnifiedPushBaseURL"
 
+        const val MUTED_UNTIL_SHOW_ALL = 0L
+        const val MUTED_UNTIL_FOREVER = 1L
+        const val MUTED_UNTIL_TOMORROW = 2L
+
         const val AUTO_DOWNLOAD_NEVER = 0L
         const val AUTO_DOWNLOAD_ALWAYS = 1L
         const val AUTO_DOWNLOAD_DEFAULT = 1024 * 1024L // Must match a value in values.xml
diff --git a/app/src/main/java/io/heckel/ntfy/ui/DetailActivity.kt b/app/src/main/java/io/heckel/ntfy/ui/DetailActivity.kt
index 186e7c9..6a13f66 100644
--- a/app/src/main/java/io/heckel/ntfy/ui/DetailActivity.kt
+++ b/app/src/main/java/io/heckel/ntfy/ui/DetailActivity.kt
@@ -22,6 +22,7 @@ import io.heckel.ntfy.BuildConfig
 import io.heckel.ntfy.R
 import io.heckel.ntfy.app.Application
 import io.heckel.ntfy.db.Notification
+import io.heckel.ntfy.db.Repository
 import io.heckel.ntfy.firebase.FirebaseMessenger
 import io.heckel.ntfy.log.Log
 import io.heckel.ntfy.msg.ApiService
@@ -289,7 +290,7 @@ class DetailActivity : AppCompatActivity(), ActionMode.Callback, NotificationFra
             notificationFragment.show(supportFragmentManager, NotificationFragment.TAG)
         } else {
             Log.d(TAG, "Re-enabling notifications ${topicShortUrl(subscriptionBaseUrl, subscriptionTopic)}")
-            onNotificationMutedUntilChanged(0L)
+            onNotificationMutedUntilChanged(Repository.MUTED_UNTIL_SHOW_ALL)
         }
     }
 
diff --git a/app/src/main/java/io/heckel/ntfy/ui/MainActivity.kt b/app/src/main/java/io/heckel/ntfy/ui/MainActivity.kt
index d34edb6..9a2a22f 100644
--- a/app/src/main/java/io/heckel/ntfy/ui/MainActivity.kt
+++ b/app/src/main/java/io/heckel/ntfy/ui/MainActivity.kt
@@ -16,6 +16,9 @@ import android.widget.Button
 import android.widget.Toast
 import androidx.activity.viewModels
 import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatDelegate
+import androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_NO
+import androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_YES
 import androidx.core.content.ContextCompat
 import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.RecyclerView
@@ -150,6 +153,9 @@ class MainActivity : AppCompatActivity(), ActionMode.Callback, AddFragment.Subsc
         // Subscribe to control Firebase channel (so we can re-start the foreground service if it dies)
         messenger.subscribe(ApiService.CONTROL_TOPIC)
 
+        // Darrkkkk mode
+        AppCompatDelegate.setDefaultNightMode(repository.getDarkMode())
+
         // Background things
         startPeriodicPollWorker()
         startPeriodicServiceRestartWorker()
@@ -304,7 +310,7 @@ class MainActivity : AppCompatActivity(), ActionMode.Callback, AddFragment.Subsc
             notificationFragment.show(supportFragmentManager, NotificationFragment.TAG)
         } else {
             Log.d(TAG, "Re-enabling global notifications")
-            onNotificationMutedUntilChanged(0L)
+            onNotificationMutedUntilChanged(Repository.MUTED_UNTIL_SHOW_ALL)
         }
     }
 
diff --git a/app/src/main/java/io/heckel/ntfy/ui/NotificationFragment.kt b/app/src/main/java/io/heckel/ntfy/ui/NotificationFragment.kt
index af1a36f..0803202 100644
--- a/app/src/main/java/io/heckel/ntfy/ui/NotificationFragment.kt
+++ b/app/src/main/java/io/heckel/ntfy/ui/NotificationFragment.kt
@@ -64,6 +64,7 @@ class NotificationFragment : DialogFragment() {
 
         muteUntilTomorrowButton = view.findViewById(R.id.notification_dialog_tomorrow)
         muteUntilTomorrowButton.setOnClickListener {
+            // Duplicate code in SettingsActivity, :shrug: ...
             val date = Calendar.getInstance()
             date.add(Calendar.DAY_OF_MONTH, 1)
             date.set(Calendar.HOUR_OF_DAY, 8)
@@ -74,7 +75,7 @@ class NotificationFragment : DialogFragment() {
         }
 
         muteForeverButton = view.findViewById(R.id.notification_dialog_forever)
-        muteForeverButton.setOnClickListener{ onClick(1) }
+        muteForeverButton.setOnClickListener{ onClick(Repository.MUTED_UNTIL_FOREVER) }
 
         return AlertDialog.Builder(activity)
             .setView(view)
diff --git a/app/src/main/java/io/heckel/ntfy/ui/SettingsActivity.kt b/app/src/main/java/io/heckel/ntfy/ui/SettingsActivity.kt
index d9975aa..4699bf4 100644
--- a/app/src/main/java/io/heckel/ntfy/ui/SettingsActivity.kt
+++ b/app/src/main/java/io/heckel/ntfy/ui/SettingsActivity.kt
@@ -12,9 +12,9 @@ import android.text.TextUtils
 import android.widget.Toast
 import androidx.annotation.Keep
 import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatDelegate
 import androidx.core.app.ActivityCompat
 import androidx.core.content.ContextCompat
-import androidx.fragment.app.FragmentManager
 import androidx.lifecycle.lifecycleScope
 import androidx.preference.*
 import androidx.preference.Preference.OnPreferenceClickListener
@@ -32,6 +32,7 @@ import kotlinx.coroutines.launch
 import okhttp3.OkHttpClient
 import okhttp3.Request
 import okhttp3.RequestBody.Companion.toRequestBody
+import java.util.*
 import java.util.concurrent.TimeUnit
 
 class SettingsActivity : AppCompatActivity() {
@@ -44,7 +45,7 @@ class SettingsActivity : AppCompatActivity() {
         Log.d(TAG, "Create $this")
 
         if (savedInstanceState == null) {
-            fragment = SettingsFragment(supportFragmentManager)
+            fragment = SettingsFragment()
             supportFragmentManager
                 .beginTransaction()
                 .replace(R.id.settings_layout, fragment)
@@ -58,7 +59,7 @@ class SettingsActivity : AppCompatActivity() {
         supportActionBar?.setDisplayHomeAsUpEnabled(true)
     }
 
-    class SettingsFragment(private val supportFragmentManager: FragmentManager) : PreferenceFragmentCompat() {
+    class SettingsFragment : PreferenceFragmentCompat() {
         private lateinit var repository: Repository
         private var autoDownloadSelection = AUTO_DOWNLOAD_SELECTION_NOT_SET
 
@@ -75,34 +76,43 @@ class SettingsActivity : AppCompatActivity() {
 
             // Notifications muted until (global)
             val mutedUntilPrefId = context?.getString(R.string.settings_notifications_muted_until_key) ?: return
-            val mutedUntilSummary = { s: Long ->
-                when (s) {
-                    0L -> getString(R.string.settings_notifications_muted_until_enabled)
-                    1L -> getString(R.string.settings_notifications_muted_until_disabled_forever)
-                    else -> {
-                        val formattedDate = formatDateShort(s)
-                        getString(R.string.settings_notifications_muted_until_disabled_until, formattedDate)
-                    }
-                }
-            }
-            val mutedUntil: Preference? = findPreference(mutedUntilPrefId)
-            mutedUntil?.preferenceDataStore = object : PreferenceDataStore() { } // Dummy store to protect from accidentally overwriting
-            mutedUntil?.summary = mutedUntilSummary(repository.getGlobalMutedUntil())
-            mutedUntil?.onPreferenceClickListener = OnPreferenceClickListener {
-                if (repository.getGlobalMutedUntil() > 0) {
-                    repository.setGlobalMutedUntil(0)
-                    mutedUntil?.summary = mutedUntilSummary(0)
-                } else {
-                    val notificationFragment = NotificationFragment()
-                    notificationFragment.settingsListener = object : NotificationFragment.NotificationSettingsListener {
-                        override fun onNotificationMutedUntilChanged(mutedUntilTimestamp: Long) {
+            val mutedUntil: ListPreference? = findPreference(mutedUntilPrefId)
+            mutedUntil?.value = repository.getGlobalMutedUntil().toString()
+            mutedUntil?.preferenceDataStore = object : PreferenceDataStore() {
+                override fun putString(key: String?, value: String?) {
+                    val mutedUntilValue = value?.toLongOrNull() ?:return
+                    when (mutedUntilValue) {
+                        Repository.MUTED_UNTIL_SHOW_ALL -> repository.setGlobalMutedUntil(mutedUntilValue)
+                        Repository.MUTED_UNTIL_FOREVER -> repository.setGlobalMutedUntil(mutedUntilValue)
+                        Repository.MUTED_UNTIL_TOMORROW -> {
+                            val date = Calendar.getInstance()
+                            date.add(Calendar.DAY_OF_MONTH, 1)
+                            date.set(Calendar.HOUR_OF_DAY, 8)
+                            date.set(Calendar.MINUTE, 30)
+                            date.set(Calendar.SECOND, 0)
+                            date.set(Calendar.MILLISECOND, 0)
+                            repository.setGlobalMutedUntil(date.timeInMillis/1000)
+                        }
+                        else -> {
+                            val mutedUntilTimestamp = System.currentTimeMillis()/1000 + mutedUntilValue * 60
                             repository.setGlobalMutedUntil(mutedUntilTimestamp)
-                            mutedUntil?.summary = mutedUntilSummary(mutedUntilTimestamp)
                         }
                     }
-                    notificationFragment.show(supportFragmentManager, NotificationFragment.TAG)
                 }
-                true
+                override fun getString(key: String?, defValue: String?): String {
+                    return repository.getGlobalMutedUntil().toString()
+                }
+            }
+            mutedUntil?.summaryProvider = Preference.SummaryProvider<ListPreference> { _ ->
+                val mutedUntilValue = repository.getGlobalMutedUntil()
+                when (mutedUntilValue) {
+                    Repository.MUTED_UNTIL_SHOW_ALL -> getString(R.string.settings_notifications_muted_until_show_all)
+                    Repository.MUTED_UNTIL_FOREVER -> getString(R.string.settings_notifications_muted_until_forever)
+                    else -> {
+                        val formattedDate = formatDateShort(mutedUntilValue)
+                        getString(R.string.settings_notifications_muted_until_x, formattedDate)
+                    }
+                }
             }
 
             // Minimum priority
@@ -163,6 +173,30 @@ class SettingsActivity : AppCompatActivity() {
                 }
             }
 
+            // Dark mode
+            val darkModePrefId = context?.getString(R.string.settings_appearance_dark_mode_key) ?: return
+            val darkMode: ListPreference? = findPreference(darkModePrefId)
+            darkMode?.value = repository.getDarkMode().toString()
+            darkMode?.preferenceDataStore = object : PreferenceDataStore() {
+                override fun putString(key: String?, value: String?) {
+                    val darkModeValue = value?.toIntOrNull() ?: return
+                    repository.setDarkMode(darkModeValue)
+                    AppCompatDelegate.setDefaultNightMode(darkModeValue)
+
+                }
+                override fun getString(key: String?, defValue: String?): String {
+                    return repository.getDarkMode().toString()
+                }
+            }
+            darkMode?.summaryProvider = Preference.SummaryProvider<ListPreference> { pref ->
+                val darkModeValue = pref.value.toIntOrNull() ?: repository.getDarkMode()
+                when (darkModeValue) {
+                    AppCompatDelegate.MODE_NIGHT_NO -> getString(R.string.settings_appearance_dark_mode_summary_light)
+                    AppCompatDelegate.MODE_NIGHT_YES -> getString(R.string.settings_appearance_dark_mode_summary_dark)
+                    else -> getString(R.string.settings_appearance_dark_mode_summary_system)
+                }
+            }
+
             // UnifiedPush enabled
             val upEnabledPrefId = context?.getString(R.string.settings_unified_push_enabled_key) ?: return
             val upEnabled: SwitchPreference? = findPreference(upEnabledPrefId)
diff --git a/app/src/main/res/layout/fragment_detail_item.xml b/app/src/main/res/layout/fragment_detail_item.xml
index 5206cd7..15b2d2b 100644
--- a/app/src/main/res/layout/fragment_detail_item.xml
+++ b/app/src/main/res/layout/fragment_detail_item.xml
@@ -42,7 +42,7 @@
             android:layout_width="0dp"
             android:layout_height="wrap_content"
             android:id="@+id/detail_item_message_text"
-            android:textColor="@color/primaryTextColor"
+            android:textColor="?android:attr/textColorPrimary"
             android:textAppearance="@style/TextAppearance.AppCompat.Medium"
             android:autoLink="web"
             app:layout_constraintTop_toBottomOf="@id/detail_item_title_text"
@@ -54,7 +54,7 @@
             android:layout_width="0dp"
             android:layout_height="wrap_content"
             android:id="@+id/detail_item_title_text"
-            android:textColor="@color/primaryTextColor"
+            android:textColor="?android:attr/textColorPrimary"
             android:textAppearance="@style/TextAppearance.AppCompat.Medium"
             android:autoLink="web"
             app:layout_constraintEnd_toEndOf="parent" android:layout_marginEnd="10dp"
@@ -112,7 +112,7 @@
                 android:layout_width="0dp"
                 android:layout_height="wrap_content"
                 android:id="@+id/detail_item_attachment_info"
-                android:textColor="@color/primaryTextColor"
+                android:textColor="?android:attr/textColorPrimary"
                 android:textAppearance="@style/TextAppearance.AppCompat.Small"
                 app:layout_constraintStart_toEndOf="@+id/detail_item_attachment_icon"
                 app:layout_constraintEnd_toEndOf="parent"
diff --git a/app/src/main/res/layout/fragment_main_item.xml b/app/src/main/res/layout/fragment_main_item.xml
index 0e3914c..1190a19 100644
--- a/app/src/main/res/layout/fragment_main_item.xml
+++ b/app/src/main/res/layout/fragment_main_item.xml
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
                                                    xmlns:app="http://schemas.android.com/apk/res-auto"
-                                                   xmlns:tools="http://schemas.android.com/tools"
                                                    android:layout_width="match_parent"
                                                    android:layout_height="wrap_content"
                                                    android:background="?android:attr/selectableItemBackground"
@@ -22,7 +21,7 @@
             app:layout_constraintBottom_toTopOf="@+id/main_item_status"
             android:layout_marginStart="10dp" app:layout_constraintStart_toEndOf="@+id/main_item_image"
             app:layout_constraintVertical_bias="0.0" android:textAppearance="@style/TextAppearance.AppCompat.Medium"
-            android:textColor="@color/primaryTextColor" android:layout_marginTop="10dp"
+            android:textColor="?android:attr/textColorPrimary" android:layout_marginTop="10dp"
             app:layout_constraintEnd_toStartOf="@+id/main_item_instant_image"/>
     <TextView
             android:text="89 notifications, reconnecting ... This may wrap in the case of UnifiedPush"
diff --git a/app/src/main/res/layout/fragment_notification_dialog.xml b/app/src/main/res/layout/fragment_notification_dialog.xml
index c7e5940..a5a51c6 100644
--- a/app/src/main/res/layout/fragment_notification_dialog.xml
+++ b/app/src/main/res/layout/fragment_notification_dialog.xml
@@ -16,10 +16,10 @@
             android:paddingBottom="8dp"
             android:text="@string/notification_dialog_title"
             android:textAlignment="viewStart"
-            android:textAppearance="@style/TextAppearance.AppCompat.Medium"
+            android:textAppearance="?android:attr/textAppearanceLarge"
             app:layout_constraintTop_toTopOf="parent" app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintEnd_toEndOf="parent" android:paddingStart="5dp" android:paddingEnd="5dp"
-            android:textColor="@color/primaryTextColor"/>
+            android:textColor="?android:attr/textColorPrimary"/>
     <RadioGroup
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index 07315be..a0f0353 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -3,13 +3,9 @@
     <color name="primaryColor">#338574</color>
     <color name="primaryLightColor">#338574</color>
     <color name="primaryDarkColor">#2A6E60</color>
-
-    <color name="primaryTextColor">#000000</color>
     <color name="primaryLightTextColor">#FFFFFF</color>
-
     <color name="primarySelectedRowColor">#EEEEEE</color>
     <color name="primaryDangerButtonColor">#C30000</color>
-
     <color name="primaryPriorityUrgentColor">#C30000</color>
     <color name="primaryPriorityHighColor">#E10000</color>
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 7680393..00b01d1 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -173,13 +173,14 @@
     <string name="notification_dialog_save">Save</string>
     <string name="notification_dialog_enabled_toast_message">Notifications re-enabled</string>
     <string name="notification_dialog_muted_forever_toast_message">Notifications are now paused</string>
-    <string name="notification_dialog_muted_until_toast_message">Notifications are now paused until %1$s</string>
+    <string name="notification_dialog_muted_until_toast_message">Notifications are paused until %1$s</string>
+    <string name="notification_dialog_show_all">Show all notifications</string>
     <string name="notification_dialog_30min">30 minutes</string>
     <string name="notification_dialog_1h">1 hour</string>
     <string name="notification_dialog_2h">2 hours</string>
     <string name="notification_dialog_8h">8 hours</string>
     <string name="notification_dialog_tomorrow">Until tomorrow</string>
-    <string name="notification_dialog_forever">Forever</string>
+    <string name="notification_dialog_forever">Until re-enabled</string>
 
     <!-- Notification popup -->
     <string name="notification_popup_action_open">Open</string>
@@ -196,9 +197,9 @@
     <string name="settings_notifications_header">Notifications</string>
     <string name="settings_notifications_muted_until_key">MutedUntil</string>
     <string name="settings_notifications_muted_until_title">Pause notifications</string>
-    <string name="settings_notifications_muted_until_enabled">All notifications will be displayed</string>
-    <string name="settings_notifications_muted_until_disabled_forever">Notifications muted until re-enabled</string>
-    <string name="settings_notifications_muted_until_disabled_until">Notifications muted until %1$s</string>
+    <string name="settings_notifications_muted_until_show_all">All notifications will be displayed</string>
+    <string name="settings_notifications_muted_until_forever">Notifications muted until re-enabled</string>
+    <string name="settings_notifications_muted_until_x">Notifications muted until %1$s</string>
     <string name="settings_notifications_min_priority_key">MinPriority</string>
     <string name="settings_notifications_min_priority_title">Minimum priority</string>
     <string name="settings_notifications_min_priority_summary_any">Notifications of all priorities are shown</string>
@@ -222,6 +223,15 @@
     <string name="settings_notifications_auto_download_5m">If smaller than 5 MB</string>
     <string name="settings_notifications_auto_download_10m">If smaller than 10 MB</string>
     <string name="settings_notifications_auto_download_50m">If smaller than 50 MB</string>
+    <string name="settings_appearance_header">Appearance</string>
+    <string name="settings_appearance_dark_mode_key">DarkMode</string>
+    <string name="settings_appearance_dark_mode_title">Dark mode</string>
+    <string name="settings_appearance_dark_mode_summary_system">Use the system default</string>
+    <string name="settings_appearance_dark_mode_summary_light">Light mode is enabled</string>
+    <string name="settings_appearance_dark_mode_summary_dark">Dark mode is enabled. Are you a vampire?</string>
+    <string name="settings_appearance_dark_mode_entry_system">Use system default</string>
+    <string name="settings_appearance_dark_mode_entry_light">Light mode</string>
+    <string name="settings_appearance_dark_mode_entry_dark">Dark mode</string>
     <string name="settings_unified_push_header">UnifiedPush</string>
     <string name="settings_unified_push_header_summary">Allows other apps to use ntfy as a message distributor. Find out more at unifiedpush.org.</string>
     <string name="settings_unified_push_enabled_key">UnifiedPushEnabled</string>
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index cd451da..e2ed459 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -1,13 +1,19 @@
 <resources>
-    <style name="AppTheme"  parent="Theme.MaterialComponents.Light.DarkActionBar">
+    <!-- DayNight mode for easy dark mode, see https://material.io/develop/android/theming/dark -->
+    <style name="AppTheme"  parent="Theme.MaterialComponents.DayNight.DarkActionBar">
         <item name="colorPrimary">@color/primaryColor</item>
-        <item name="colorPrimaryVariant">@color/primaryDarkColor</item>
         <item name="colorAccent">@color/primaryLightColor</item>
+        <item name="actionBarStyle">@style/Custom.ActionBar</item>
         <item name="android:statusBarColor">@color/primaryColor</item>
         <item name="actionModeBackground">@color/primaryDarkColor</item>
     </style>
 
-    <!-- Rounded corners in images: https://stackoverflow.com/a/61960983/1440785 -->
+    <!-- Action bar color identical in dark mode, see https://stackoverflow.com/a/58368668/1440785 -->
+    <style name="Custom.ActionBar" parent="Widget.MaterialComponents.Light.ActionBar.Solid">
+        <item name="background">@color/primaryColor</item>
+    </style>
+
+    <!-- Rounded corners in images, see https://stackoverflow.com/a/61960983/1440785 -->
     <style name="roundedCornersImageView" parent="">
         <item name="cornerFamily">rounded</item>
         <item name="cornerSize">5dp</item>
diff --git a/app/src/main/res/values/values.xml b/app/src/main/res/values/values.xml
index 5987d50..60528a0 100644
--- a/app/src/main/res/values/values.xml
+++ b/app/src/main/res/values/values.xml
@@ -1,5 +1,23 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
+    <string-array name="settings_notifications_muted_until_entries">
+        <item>@string/notification_dialog_show_all</item>
+        <item>@string/notification_dialog_30min</item>
+        <item>@string/notification_dialog_1h</item>
+        <item>@string/notification_dialog_2h</item>
+        <item>@string/notification_dialog_8h</item>
+        <item>@string/notification_dialog_tomorrow</item>
+        <item>@string/notification_dialog_forever</item>
+    </string-array>
+    <string-array name="settings_notifications_muted_until_values">
+        <item>0</item> <!-- See Repository -->
+        <item>30</item> <!-- See Minutes -->
+        <item>60</item>
+        <item>120</item>
+        <item>480</item>
+        <item>2</item> <!-- See Repository -->
+        <item>1</item> <!-- See Repository -->
+    </string-array>
     <string-array name="settings_notifications_min_priority_entries">
         <item>@string/settings_notifications_min_priority_min</item>
         <item>@string/settings_notifications_min_priority_low</item>
@@ -50,4 +68,15 @@
         <item>copy</item>
         <item>upload</item>
     </string-array>
+    <string-array name="settings_appearance_dark_mode_entries">
+        <item>@string/settings_appearance_dark_mode_entry_system</item>
+        <item>@string/settings_appearance_dark_mode_entry_light</item>
+        <item>@string/settings_appearance_dark_mode_entry_dark</item>
+    </string-array>
+    <string-array name="settings_appearance_dark_mode_values">
+        <!-- Must match values in AppCompatDelegate -->
+        <item>-1</item>
+        <item>1</item>
+        <item>2</item>
+    </string-array>
 </resources>
diff --git a/app/src/main/res/xml/main_preferences.xml b/app/src/main/res/xml/main_preferences.xml
index e8f51c0..6372b84 100644
--- a/app/src/main/res/xml/main_preferences.xml
+++ b/app/src/main/res/xml/main_preferences.xml
@@ -1,12 +1,14 @@
 <PreferenceScreen xmlns:app="http://schemas.android.com/apk/res-auto"
-                  xmlns:android="http://schemas.android.com/apk/res/android"
                   app:title="@string/settings_title">
     <PreferenceCategory
             app:title="@string/settings_notifications_header"
             app:layout="@layout/preference_category_material_edited">
-        <Preference
+        <ListPreference
                 app:key="@string/settings_notifications_muted_until_key"
-                app:title="@string/settings_notifications_muted_until_title"/>
+                app:title="@string/settings_notifications_muted_until_title"
+                app:entries="@array/settings_notifications_muted_until_entries"
+                app:entryValues="@array/settings_notifications_muted_until_values"
+                app:defaultValue="0"/>
         <ListPreference
             app:key="@string/settings_notifications_min_priority_key"
             app:title="@string/settings_notifications_min_priority_title"
@@ -20,6 +22,16 @@
                 app:entryValues="@array/settings_notifications_auto_download_values"
                 app:defaultValue="1"/>
     </PreferenceCategory>
+    <PreferenceCategory
+            app:title="@string/settings_appearance_header"
+            app:layout="@layout/preference_category_material_edited">
+        <ListPreference
+                app:key="@string/settings_appearance_dark_mode_key"
+                app:title="@string/settings_appearance_dark_mode_title"
+                app:entries="@array/settings_appearance_dark_mode_entries"
+                app:entryValues="@array/settings_appearance_dark_mode_values"
+                app:defaultValue="-1"/>
+    </PreferenceCategory>
     <PreferenceCategory
             app:title="@string/settings_unified_push_header"
             app:summary="@string/settings_unified_push_header_summary"