I found another way to do this. I can use resources to draw themes for visual studio directly from xaml. For example:
Background="{DynamicResource {x:Static vsfx:VsBrushes.ToolWindowBackgroundKey}}"
where vsfx
xmlns:vsfx="clr-namespace:Microsoft.VisualStudio.Shell;assembly=Microsoft.VisualStudio.Shell.10.0"
This approach solved this problem!
pingvinius
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