ControlDarkDark to ControlLightLight
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Class="SDKSample.SampleViewer" Title="Examples" > <Canvas> <Rectangle> <Rectangle.Fill> <LinearGradientBrush> <LinearGradientBrush.GradientStops> <GradientStop Offset="0" Color="{x:Static SystemColors.ControlDarkDarkColor}"/> <GradientStop Offset="1" Color="{x:Static SystemColors.ControlLightLightColor}"/> </LinearGradientBrush.GradientStops> </LinearGradientBrush> </Rectangle.Fill> </Rectangle> </Canvas> </Window>