The other day Tomas Restrepo released a new Visual Studio Color Theme called Distant Shores.  It is a low-contrast theme with a dark background, and I must admit I am a BIG FAN!  Have a look at the following screen shot.  BTW - The font I am using is Damien Guard's Envy CodeR font that Tomas Restrepo recommends in his blog posting.

Distant Shores

Give it a shot!  Your eyes will thank you!