I’m going to mark this as completed so you can get your votes back – note that Matthew Johnson has released a VS 2012 color theme editor as you requested (link below) – I know it doesn’t have everything you requested in this idea, but hopefully this helps to address your feedback.

thanks,
Doug Turnure – Visual Studio PM

http://visualstudiogallery.msdn.microsoft.com/366ad100-0003-4c9a-81a8-337d4e7ace05