diff --git a/manuskript/mainWindow.py b/manuskript/mainWindow.py
index d1d1a6e..b25dfa0 100644
--- a/manuskript/mainWindow.py
+++ b/manuskript/mainWindow.py
@@ -17,6 +17,7 @@ from manuskript.models.outlineModel import outlineModel
 from manuskript.models.plotModel import plotModel
 from manuskript.models.worldModel import worldModel
 from manuskript.settingsWindow import settingsWindow
+from manuskript.ui import style
 from manuskript.ui.collapsibleDockWidgets import collapsibleDockWidgets
 from manuskript.ui.compileDialog import compileDialog
 from manuskript.ui.helpLabel import helpLabel
@@ -756,40 +757,7 @@ class MainWindow(QMainWindow, Ui_MainWindow):
 
     def setupMoreUi(self):
 
-        self.setStyleSheet("""
-        QMenuBar#menubar{border:none;}
-
-        QToolButton{
-            background: none;
-            border: none;
-        }
-        QPushButton:flat:hover, QToolButton:hover{
-            border: 1px solid darkgray;
-            border-radius: 3px;
-            background: darkgray;
-        }
-
-        """)
-
-        # Custon palette?
-        p = qApp.palette()
-        c = p.color(p.Window)
-        # p.setColor(p.Base, c.lighter(115))
-        p.setColor(p.Base, QColor("#EEE"))
-        qApp.setPalette(p)
-
-        p = self.treeRedacOutline.palette()
-        c = p.color(p.Window)
-        # p.setBrush(p.Base, Qt.red)  # That doesn't work, why?
-        # p.setBrush(p.Window, Qt.green)
-        # self.treeRedacOutline.setPalette(p)
-        # self.treeRedacOutline.setStyleSheet("background: {};".format(c.name()))
-        self.treeRedacOutline.setStyleSheet("""
-            QTreeView{
-                background: transparent;
-                margin-top: 30px;
-            }
-            """)
+        style.styleMainWindow(self)
 
         # Tool bar on the right
         self.toolbar = collapsibleDockWidgets(Qt.RightDockWidgetArea, self)
diff --git a/manuskript/ui/collapsibleDockWidgets.py b/manuskript/ui/collapsibleDockWidgets.py
index 292aa44..1d3bf2c 100644
--- a/manuskript/ui/collapsibleDockWidgets.py
+++ b/manuskript/ui/collapsibleDockWidgets.py
@@ -4,6 +4,8 @@ from PyQt5.QtCore import Qt
 from PyQt5.QtWidgets import QToolBar, QDockWidget, QAction, QToolButton, QSizePolicy, QStylePainter, \
     QStyleOptionButton, QStyle
 
+from manuskript.ui import style
+
 
 class collapsibleDockWidgets(QToolBar):
     """
@@ -39,17 +41,7 @@ class collapsibleDockWidgets(QToolBar):
             b.setDefaultAction(d.toggleViewAction())
             # d.setStyleSheet("QDockWidget::title{background-color: red;}")
             # d.setTitleBarWidget(QLabel(d.windowTitle()))
-            d.setStyleSheet("""
-            QDockWidget::title {
-                text-align: left; /* align the text to the left */
-                background: lightBlue;
-                padding: 5px;
-            }
-
-            QDockWidget::close-button, QDockWidget::float-button {
-                background: lightBlue;
-            }
-            """)
+            d.setStyleSheet(style.dockSS())
             a = self.addWidget(b)
             self._dockToButtonAction[d] = a
 
@@ -59,16 +51,7 @@ class collapsibleDockWidgets(QToolBar):
         self.otherWidgets = []
         self.currentGroup = None
 
-        self.setStyleSheet("""
-        QToolBar{
-            background:transparent;
-            border: none;
-            spacing: 0px;
-        }
-        QToolBar:separator{
-            border: none;
-        }
-        """)
+        self.setStyleSheet(style.toolBarSS())
 
     def _dockWidgets(self):
         mw = self.parent()
@@ -128,33 +111,7 @@ class verticalButton(QToolButton):
         QToolButton.__init__(self, parent)
         self.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Minimum)
 
-        self.setStyleSheet("""
-            QToolButton{
-                border: none;
-                border-radius: 0px;
-                background: transparent;
-                margin: 0px;
-                padding: 3px;
-            }
-            /*QToolButton:checked{
-                border: 0px solid darkgray;
-                background: transparent;
-                color: darkblue;
-            }
-            QToolButton:hover{
-                border: 0px solid darkgray;
-                color: darkblue;
-            }*/
-            QToolButton:checked{
-                border: 0px solid darkgray;
-                background: #bbbbbb;
-            }
-            QToolButton:hover{
-                border: 0px solid darkgray;
-                background: #cccccc;
-            }
-
-            """)
+        self.setStyleSheet(style.verticalToolButtonSS())
 
     def sizeHint(self):
         return QToolButton.sizeHint(self).transposed()
diff --git a/manuskript/ui/collapsibleGroupBox2.py b/manuskript/ui/collapsibleGroupBox2.py
index dcba689..9bb6c7a 100644
--- a/manuskript/ui/collapsibleGroupBox2.py
+++ b/manuskript/ui/collapsibleGroupBox2.py
@@ -4,6 +4,7 @@ from PyQt5.QtCore import Qt
 from PyQt5.QtWidgets import QWidget, QFrame, QPushButton, QVBoxLayout, QSizePolicy, qApp
 
 from manuskript.functions import lightBlue
+from manuskript.ui import style
 
 
 class collapsibleGroupBox2(QWidget):
@@ -17,34 +18,7 @@ class collapsibleGroupBox2(QWidget):
         self.vPolicy = None
         # self.button.setStyleSheet("background-color: lightBlue;")
 
-        s1 = """
-        QPushButton{
-            background-color: #BBB;
-            border: none;
-            padding: 2px;
-        }
-        QPushButton:checked, QPushButton:hover{
-            font-style:italic;
-            background-color:lightBlue;
-        }"""
-
-        # p = qApp.palette()
-        # c = p.color(p.Window)
-
-        s2 = """
-        QPushButton{
-            background-color: transparent;
-            border: none;
-            border-top: 1px solid darkgray;
-            padding: 4px 0px;
-            font-weight: bold;
-        }
-        QPushButton:hover{
-            background-color:#cccccc;
-        }
-        """
-
-        self.button.setStyleSheet(s2)
+        self.button.setStyleSheet(style.collapsibleGroupBoxButton())
 
     def resizeEvent(self, event):
         if not self.switched:
diff --git a/manuskript/ui/editors/mainEditor.py b/manuskript/ui/editors/mainEditor.py
index 7a26066..637a5ad 100644
--- a/manuskript/ui/editors/mainEditor.py
+++ b/manuskript/ui/editors/mainEditor.py
@@ -11,6 +11,7 @@ from PyQt5.QtWidgets import qApp
 from manuskript import settings
 from manuskript.enums import Outline
 from manuskript.functions import AUC, mainWindow, drawProgress
+from manuskript.ui import style
 from manuskript.ui.editors.editorWidget import editorWidget
 from manuskript.ui.editors.fullScreenEditor import fullScreenEditor
 from manuskript.ui.editors.mainEditor_ui import Ui_mainEditor
@@ -51,34 +52,7 @@ class mainEditor(QWidget, Ui_mainEditor):
                 self.showFullScreen, AUC)
 
         self.tab.setDocumentMode(False)
-        self.tab.setStyleSheet("""
-        QTabWidget::pane{
-            margin-top: -1px;
-            border: 1px solid #999;
-        }
-        QTabWidget::tab-bar{
-            left:10px;
-        }
-        QTabBar{
-            background: transparent;
-            border-radius: 0;
-            border: 0px;
-        }
-        QTabBar::tab{
-            margin: 2px 0 0 0;
-            padding: 2px 9px;
-            border: 1px solid #999;
-            border-bottom: 0px;
-            margin-top: 3px;
-        }
-        QTabBar::tab:selected{
-            border: 1px solid #999;
-            background: white;
-            border-bottom: 0px;
-            margin-top: 0px;
-        }
-
-        """)
+        self.tab.setStyleSheet(style.mainEditorTabSS())
 
     ###############################################################################
     # TABS
diff --git a/manuskript/ui/style.py b/manuskript/ui/style.py
new file mode 100644
index 0000000..9a3daed
--- /dev/null
+++ b/manuskript/ui/style.py
@@ -0,0 +1,166 @@
+#!/usr/bin/env python
+# --!-- coding: utf8 --!--
+
+
+# default window color (linux):
+from PyQt5.QtGui import QColor
+from PyQt5.QtWidgets import qApp
+
+window = "#d6d2d0" #"#eee"
+
+bgHover = "#ccc"
+bgChecked = "#bbb"
+borderColor = "darkGray"
+
+def mainWindowSS():
+    return """
+    QMenuBar#menubar{{border:none;}}
+
+    QToolButton{{
+        background: none;
+        border: none;
+    }}
+    QPushButton:flat:hover, QToolButton:hover{{
+        border: 1px solid {borderColor};
+        border-radius: 3px;
+        background: {bgHover};
+    }}
+    """.format(
+        bgHover=bgHover,
+        borderColor=borderColor
+    )
+
+def styleMainWindow(mw):
+    mw.setStyleSheet(mainWindowSS())
+
+    # Custon palette?
+    qApp.setPalette(appPalette())
+
+    mw.treeRedacOutline.setStyleSheet("""
+            QTreeView{
+                background: transparent;
+                margin-top: 30px;
+            }""")
+
+
+def appPalette():
+    p = qApp.palette()
+    c = p.color(p.Window)
+    # p.setColor(p.Window, QColor(window))
+    # p.setColor(p.Base, c.lighter(115))
+    # p.setColor(p.Base, QColor("#FFF"))
+    return p
+
+
+def collapsibleGroupBoxButton():
+    s1 = """
+        QPushButton{
+            background-color: #BBB;
+            border: none;
+            padding: 2px;
+        }
+        QPushButton:checked, QPushButton:hover{
+            font-style:italic;
+            background-color:lightBlue;
+        }"""
+
+    s2 = """
+        QPushButton{{
+            background-color: transparent;
+            border: none;
+            border-top: 1px solid {bgChecked};
+            padding: 4px 0px;
+            font-weight: bold;
+        }}
+        QPushButton:hover{{
+            background-color:{bgHover};
+        }}
+        """.format(
+        bgHover=bgHover,
+        bgChecked=bgChecked
+    )
+
+    return s2
+
+
+def mainEditorTabSS():
+    return """
+        QTabWidget::pane{
+            margin-top: -1px;
+            border: 1px solid #999;
+        }
+        QTabWidget::tab-bar{
+            left:10px;
+        }
+        QTabBar{
+            background: transparent;
+            border-radius: 0;
+            border: 0px;
+        }
+        QTabBar::tab{
+            margin: 2px 0 0 0;
+            padding: 2px 9px;
+            border: 1px solid #999;
+            border-bottom: 0px;
+            margin-top: 3px;
+        }
+        QTabBar::tab:selected{
+            border: 1px solid #999;
+            background: white;
+            border-bottom: 0px;
+            margin-top: 0px;
+        }
+        QTabBar::tab:!selected:hover{
+            background:#ddd;
+        }
+        """
+
+def toolBarSS():
+    return """
+        QToolBar{
+            background:transparent;
+            border: 0;
+            border-left: 1px solid darkgray;
+            spacing: 0px;
+        }
+        QToolBar:separator{
+            border: none;
+        }
+        """
+
+def verticalToolButtonSS():
+    return """
+        QToolButton{{
+            border: none;
+            border-radius: 0px;
+            background: transparent;
+            margin: 0px;
+            padding: 4px 8px;
+        }}
+        QToolButton:checked{{
+            border: 0px solid {borderColor};
+            background: {bgChecked};
+        }}
+        QToolButton:hover{{
+            border: 0px solid {borderColor};
+            background: {bgHover};
+        }}
+        """.format(
+        borderColor=borderColor,
+        bgChecked=bgChecked,
+        bgHover=bgHover
+    )
+
+
+def dockSS():
+    return """
+            QDockWidget::title {
+                text-align: left; /* align the text to the left */
+                background: lightBlue;
+                padding: 5px;
+            }
+
+            QDockWidget::close-button, QDockWidget::float-button {
+                background: lightBlue;
+            }
+            """