I code a LOT in Visual Studio 2008, but since I also do it on a laptop with a pretty dim screen, I needed a theme with lots of contrast. IMHO white on black has more contrast than black on white for screen reading, therefore I went with a lovely little theme called Ragnorak Blue from winterdom. But, at the same time, I’m also not blind so I changed the default font size from 15pt to 10pt which seems to work just nice on my laptop. Don’t have an opinion on my desktop with its huge displays yet though.
I also prefer the K&R style for indentation and bracketing on the grounds that I personally find it more readable and more aesthetically pleasing to have large code blocks with limited white space. However, in those troubled times where I have to code in a different style, I find the key chord Ctrl+K,F for auto format highly useful.
Mostly for my own sake (backup purposes) you can if interested download my current settings here. It’s stuff I’ve adapted from Microsoft StyleCop and ReSharper.