Nowadays we are used to customize a lot of the software we use by applying theming and skinning along with other settings. This kind of customization is present in the operating systems, messaging applications, web applications, etc.
Well, when it comes to development environments it is also possible to do that, and many people do.
Take a look at this blog where you can find several color schemes that can be used in Visual Studio. Just code with the colors that make you comfortable, or as your boss would demand: productive. 
These kind of setting can be imported/exported in the Tools menu in both Visual Studio 2005 and 2008.
I use John Lam’s Visual Studio settings: http://www.iunknown.com/2007/06/vibrant_ink_vis.html and they sure look sweet
I really prefer a white background.