I don't think they were white. I believe they were tan, like Middle Easterners. Actually, it matters more for Noah's family than Adam and Eve. I believe Adam and Eve had the genes (genes, right?) for every skin color, but since people were marrying their close relatives (disturbing, but how else would you populate the earth?), each generation became more diverse. I think generally the same thing happened with Noah. It might sound kinda funny, but I think it's more reasonable to believe all skin colors came from one skin color than from primates (no offense).