If Adam was white and Eve was black, then their kids could only be:
* Brown (mixed of white and black)
So, asians are probably aliens. Just kidding.
But the point is: we can't have the races white, black, asian and native american if everybody originated from Adam and Eve.
I asked Christians about this and they said it was evolution. Well, now evolution works, but when I said it before it didn't. Interesting...
Or the classic "God did it".