Also, here are screenshots of the dark theme: http://blogs.msdn.com/b/visualstudio/archive/2012/05/29/visu...
Although in VS2010 as far as I know you can't change the colors of the explorer menus and such, but it appears in those new screenshots that you can in VS2012.
http://visualstudiogallery.msdn.microsoft.com/20cd93a2-c435-...
Also, here are screenshots of the dark theme: http://blogs.msdn.com/b/visualstudio/archive/2012/05/29/visu...