An ellipse with a radial fill
<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'>
<StackPanel>
<Ellipse Height ="75" Width ="75">
<Ellipse.Fill>
<RadialGradientBrush GradientOrigin="0.5,0.5"
Center="0.5,0.5" RadiusX="0.5" RadiusY="0.5">
<GradientStop Color="Yellow" Offset="0" />
<GradientStop Color="Red" Offset="0.25" />
<GradientStop Color="Blue" Offset="0.75" />
<GradientStop Color="LimeGreen" Offset="1" />
</RadialGradientBrush>
</Ellipse.Fill>
</Ellipse>
</StackPanel>
</UserControl>
Related examples in the same category