Blue

 

I like white the best and it is very rare, the only draw back to it is if you get an '03 the only interior color you can get is crap brown. If it came with the option of red it would be awesome. That alone is the reason mine is going to be yellow.

 

My vote would have to be black. It being a black car and all, it isn't much diifferent from a white in temperature once the top is down. And when clean, which is the hard part, is the best looking color.