XAML for shifting between colors
<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 x:Name="LayoutRoot" Background="White"> <Canvas.Triggers> <EventTrigger RoutedEvent="Canvas.Loaded"> <BeginStoryboard> <Storyboard x:Name="myStoryboard"> <ColorAnimation Storyboard.TargetName="myEllipse" Storyboard.TargetProperty="(Fill).(SolidColorBrush.Color)" Duration="00:00:01" From="Yellow" To="Red" /> </Storyboard> </BeginStoryboard> </EventTrigger> </Canvas.Triggers> <Ellipse x:Name="myEllipse" Canvas.Top="100" Canvas.Left="100" Stroke="Black" StrokeThickness="2" Height="50" Width="50" Fill="Yellow" /> </Canvas> </UserControl>