If you visited ScottGu's Blog of one of the .net architects, you probably noticed that its code samples are often submitted in a strange “dark” coloring.
I became interested and decided to look for what this topic was and found it. WekkeRoad blog posting the same or similar topic. The archive contains a settings file that is used in the studio via the Tools -> Import And Export Settings menu item ... At first glance, it is very unusual and contrasts with the other windows in the studio, but after sitting in a dark studio a little, you start to find some thats a nice side. In general, if your path is a dark Jedi, then a dark studio is your choice. ')
Direct link to the archive with the settings.
PS: in the comments dmx and Project86 suggested alternative options: a less contrasting theme and a theme with a larger font.