I firmly believe that, when aggitated, the bees will seek out darker areas. I actually, once wore a white and black sock to the local association's apiary once before. At the end of the day, I had nine stings in my left ankle (black sock) and zero in the right (white sock).
P.S. I wore the different colored socks just because I had no other socks clean at the moment but, I find it relevent to this.