Another building block that I have used to theme my MZ-Tools add-in with the Visual Studio 2012 Dark/Light themes:

HOWTO: Get the Microsoft.VisualStudio.Shell.Interop.IVsUIShell5 interface to theme a Visual Studio 2012 add-in:
http://www.mztools.com/articles/2012/MZ2012027.aspx

In a next article I will explain how to invert the colors of a bitmap like VS 2012 does.