VRCMelonAssistant/VRCMelonAssistant/Styles/RepeatButton.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Style x:Key="VRCMelonAssistantRepeatButton" TargetType="{x:Type RepeatButton}">
        <Setter Property="BorderThickness" Value="1" />
        <Setter Property="HorizontalContentAlignment" Value="Center" />
        <Setter Property="VerticalContentAlignment" Value="Center" />
        <Setter Property="Padding" Value="1" />
        <Setter Property="Focusable" Value="False" />
        <Setter Property="IsTabStop" Value="False" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type RepeatButton}">
                    <Border
                        Name="border"
                        Background="{DynamicResource ScrollBarBackground}"
                        BorderBrush="{StaticResource ScrollBarBorder}"
                        BorderThickness="1"
                        SnapsToDevicePixels="True">
                        <ContentPresenter
                            Name="contentPresenter"
                            Margin="{TemplateBinding Padding}"
                            HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                            VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                            Focusable="False"
                            SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="UIElement.IsMouseOver" Value="True">
                            <Setter TargetName="border" Property="Background" Value="{DynamicResource ScrollBarArrowHovered}" />
                        </Trigger>
                        <Trigger Property="IsPressed" Value="True">
                            <Setter TargetName="border" Property="Background" Value="{DynamicResource ScrollBarArrowClicked}" />
                        </Trigger>
                        <Trigger Property="IsEnabled" Value="False">
                            <Setter TargetName="contentPresenter" Property="UIElement.Opacity" Value="0.56" />
                            <Setter TargetName="border" Property="Background" Value="{DynamicResource ScrollBarDisabled}" />
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <Style x:Key="VRCMelonAssistantSmallRepeatButton" TargetType="{x:Type RepeatButton}">
        <Setter Property="FrameworkElement.OverridesDefaultStyle" Value="True" />
        <Setter Property="Background" Value="{DynamicResource ScrollBarBackground}" />
        <Setter Property="Focusable" Value="False" />
        <Setter Property="IsTabStop" Value="False" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type RepeatButton}">
                    <Rectangle
                        Width="{TemplateBinding Width}"
                        Height="{TemplateBinding Height}"
                        Fill="{TemplateBinding Background}" />
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>