<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="RSS Reader">
<Grid xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Grid.Resources>
<ControlTemplate x:Key="buttonTemplate">
<Grid>
<Ellipse x:Name="outerCircle" Width="100" Height="100">
<Ellipse.Fill>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<GradientStop Offset="0" Color="Blue"/>
<GradientStop Offset="1" Color="Red"/>
</LinearGradientBrush>
</Ellipse.Fill>
</Ellipse>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="Button.IsMouseOver" Value="True">
<Setter TargetName="outerCircle" Property="Fill" Value="Orange"/>
</Trigger>
<Trigger Property="Button.IsPressed" Value="True">
<Setter Property="RenderTransform">
<Setter.Value>
<ScaleTransform ScaleX=".9" ScaleY=".9"/>
</Setter.Value>
</Setter>
<Setter Property="RenderTransformOrigin" Value=".5,.5"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Grid.Resources>
<Button Template="{StaticResource buttonTemplate}">OK</Button>
</Grid>
</Window>
