Scott Hanselman has a post on how to make the appearance closer to VS2010. Including a registry setting to change the menus to title case.
http://www.hanselman.com/blog/YourColorfulVisualStudio2012Wi...
http://www.hanselman.com/blog/YourColorfulVisualStudio2012Wi...
That said, since they are diverging from any kind of standard look, making the colors customizable is certainly a good thing.