Sorry, JT, but the Webster's New World College Dictionary (4th Edition) defines race as, among other things, "any of the different varieties or populations of human beings distinguished by physical traits such as hair, eyes, skin color, body shape, etc."
By that definition, not only can races be classified by skin color, but we fat people can be a race of our own as well. So may blue-eyed people, or brown-haired people.
This post is intended as information only. It is in no way intended to further hate mongering as I see race as being nothing more than a neutral adjective when it is applied to describing a person, and I see only two kinds of people. And they are those who derive pleasure from acting positively(at least most of the time) and those who derive pleasure from acting negatively. And it takes all kinds to make the big blue marble spin.
(Steps away from pulpit)