PowerToys/Wox/Themes/Light.xaml

<ResourceDictionary  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="Default.xaml"></ResourceDictionary>
    </ResourceDictionary.MergedDictionaries>

    <Style x:Key="QueryBoxStyle" BasedOn="{StaticResource BaseQueryBoxStyle}" TargetType="{x:Type TextBox}">
        <Setter Property="Background" Value="#EBEBEB"/>
        <Setter Property="Foreground" Value="#000000" />
    </Style>
    <Style x:Key="WindowBorderStyle" BasedOn="{StaticResource BaseWindowBorderStyle}" TargetType="{x:Type Border}">
        <Setter Property="BorderBrush" Value="#AAAAAA" />
        <Setter Property="BorderThickness" Value="5" />
        <Setter Property="Background" Value="#ffffff"></Setter>
    </Style>
    <Style x:Key="WindowStyle" TargetType="{x:Type Window}" BasedOn="{StaticResource BaseWindowStyle}" >
    </Style>
    <Style x:Key="PendingLineStyle" BasedOn="{StaticResource BasePendingLineStyle}" TargetType="{x:Type Line}" >
    </Style>

    <!-- Item Style -->
    <Style x:Key="ItemTitleStyle" BasedOn="{StaticResource BaseItemTitleStyle}" TargetType="{x:Type TextBlock}" >
        <Setter Property="Foreground" Value="#000000"></Setter>
    </Style>
    <Style x:Key="ItemSubTitleStyle" BasedOn="{StaticResource BaseItemSubTitleStyle}" TargetType="{x:Type TextBlock}" >
        <Setter Property="Foreground"  Value="#000000"></Setter>
    </Style>
    <Style x:Key="ItemTitleSelectedStyle" BasedOn="{StaticResource BaseItemTitleSelectedStyle}" TargetType="{x:Type TextBlock}">
        <Setter Property="Foreground" Value="#F6F6FF" />
    </Style>
    <Style x:Key="ItemSubTitleSelectedStyle" BasedOn="{StaticResource BaseItemSubTitleSelectedStyle}" TargetType="{x:Type TextBlock}">
        <Setter Property="Foreground" Value="#F6F6FF" />
    </Style>
    <Color x:Key="ItemSelectedBackgroundColor">#3875D7</Color>

    <!-- button style in the middle of the scrollbar -->
    <Style x:Key="ThumbStyle" BasedOn="{StaticResource BaseThumbStyle}" TargetType="{x:Type Thumb}">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type Thumb}">
                    <Border CornerRadius="2" DockPanel.Dock="Right" Background="#DEDEDE" BorderBrush="Transparent" BorderThickness="0" />
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <Style x:Key="ScrollBarStyle" BasedOn="{StaticResource BaseScrollBarStyle}" TargetType="{x:Type ScrollBar}">
    </Style>
</ResourceDictionary>