In my Norse D&D campaign I had Dok Alfar who were rebels who opposed the Alfar who were the mainstream elven race. The Dok Alfar are not necessarily dark skinned. I bring this up because I recently read a really poor article trying to claim D&D is primarily white supremist in nature. The first link is a nice resource on Alfar. The second link is an article about how D&D for the whitie.
http://www.hauntediceland.com/black-elves-dark-elves-light-elves.htm
http://raceindnd.wordpress.com/