I cannot believe you gentlemen is still having this conversation, because it serve not purpose, besides going in circle. I reckoned it depends on the country, Rod. Beyonce would not be considered white by a long shot, maybe in other countries in Africa, even among southern Sudanese many will think she is a Northerner until she say otherwise.
Hell this girl in the far left in blue reminds me of beyonce. No where in East Africa or North Africa Beyonce would be considered "white". By a long shot. However we do have terms in describing individual skin colors, which makes sense due to the skin color diversity, but you have descriptive terms in many African groups, so this should not be any surprise.
http://i51.tinypic.com/2r6h2lu.jpg
The girl in the far left looks similiar to Beyonce.