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.