There’s a free Visual Studio Color Theme Editor by Matthew Johnson that you can download and modify the VS IDE theme however you like. Once you’ve installed it (it’s a VSIX – an extension to VS2010 – not an MSI, so don’t be scared) there will be a new menu in VS called “theme.”
Here’s the built in themes. Remember these are VS themes, not Windows themes, so they won’t affect Windows colors. Also, this is changing the colors of the IDE itself, not the text editor. You can choose your text styles at http://studiostyles.info.
Windows XP Silver
Windows XP Emerald
Windows XP Autumn
Windows XP Olive
Default Visual Studio 2010 Theme
Have fun! You can make your own themes as well and import/export them. Enjoy.