I have posted a link to an article (just google it) from the Discover Science Journal. The study hypothesizes that early humans had fair skin, just like our closest relatives chimpanzees. The evidence collected by the study seems to support the 'early human - fair skin' hypothesis. Of course nobody knows for sure, but I thought you might be interested. Enjoy!
Discover, Vol. 22, No. 2, February, 2001. Gina Kirchweger