A Semi-Transparent Button
<Window x:Class="ClassicControls.Transparency" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Background="White" Title="Transparency" Height="385" Width="450"> <StackPanel Margin="5"> <Button Foreground="White" FontSize="16" Margin="10" BorderBrush="White" Background="#60AA4030" Padding="20">A Semi-Transparent Button</Button> </StackPanel> </Window>