I've found that over the course of a long day of programming it helps to swap out the font/color scheme of Visual Studio (I use version 2005 mostly)

To that end, I've collected a number of nice .vsetttings files from some of the gurus out there on the Net. 

Without further ado, here's a link to a zipfile containing my small collection.

VS Settings collection: Settings Collection

In visual studio, you can use the Import and Export Settings menu option (via Tools menu -- fires up a wizard) or just use Tools->Options->Environment->Import and Export Settings and select the file to import.

Note: Settings files are not limited to font/color settings, so coder beware. Best thing to do is export (i.e., save to vssettings file) your current settings so that if you don't like the result, you can just import your old settings back.