Radial Color Gradients
<UserControl x:Class='SilverlightApplication3.MainPage' xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation' xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml' xmlns:d='http://schemas.microsoft.com/expression/blend/2008' xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006' mc:Ignorable='d' d:DesignWidth='640' d:DesignHeight='480'> <Canvas> <Rectangle Width="200" Height="100" Canvas.Left="50" Canvas.Top="50" Stroke="Black" StrokeThickness="4"> <Rectangle.Fill> <RadialGradientBrush Center="0.5 0.5" GradientOrigin="0.5 0.5" RadiusX="0.5" RadiusY="0.5"> <GradientStop Color="Yellow" Offset="0"/> <GradientStop Color="Red" Offset="0.40"/> <GradientStop Color="Blue" Offset="0.80"/> </RadialGradientBrush> </Rectangle.Fill> </Rectangle> </Canvas> </UserControl>