<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Style x:Key="GridSplitterPreviewStyle">
        <Setter Property="Control.Template">
            <Setter.Value>
                <ControlTemplate>
                    <Rectangle Fill="{DynamicResource SystemControlHighlightBaseMediumLowBrush}" />
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <Style x:Key="DefaultGridSplitterStyle" TargetType="GridSplitter">
        <Setter Property="OverridesDefaultStyle" Value="True" />
        <Setter Property="Background" Value="{DynamicResource SystemControlHighlightChromeHighBrush}" />
        <Setter Property="PreviewStyle" Value="{StaticResource GridSplitterPreviewStyle}" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="GridSplitter">
                    <Border
                        BorderBrush="{TemplateBinding BorderBrush}"
                        BorderThickness="{TemplateBinding BorderThickness}"
                        Background="{TemplateBinding Background}" />
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <Style TargetType="GridSplitter" BasedOn="{StaticResource DefaultGridSplitterStyle}" />
</ResourceDictionary>