I have a WPF window which is without the window chrome, so I have implemented custom window controls, like here (I'm going to style them later):

The XAML for this is:
<StackPanel Orientation="Horizontal" Grid.Column="2" FlowDirection="RightToLeft"> <Button FontFamily="Marlett" FontSize="16" VerticalAlignment="Top" Foreground="White" Background="Black" Width="40">r</Button> <Button FontFamily="Marlett" FontSize="16" VerticalAlignment="Top" Foreground="White" Background="Black" Width="30">1</Button> <Button FontFamily="Marlett" FontSize="16" VerticalAlignment="Top" Foreground="White" Background="Black" Width="30">0</Button> </StackPanel> However, I want the icons that are used in the native Windows chrome. Here's an example in Spotify:

As you can see, they look a lot like the Windows buttons, and they fit right in with the background gradient.
Is there a way this can be implemented in WPF, or is there a place I can obtain the Windows window options images/glyphs?