OuterGlowBitmapEffect for a Button
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" Title=""> <Canvas> <Button Width="100" Margin="20"> <Button.BitmapEffect> <OuterGlowBitmapEffect GlowSize="20" Noise="1" GlowColor="Red"/> </Button.BitmapEffect> </Button> </Canvas> </Window>