Will there be people of different race in heaven?

I have often wondered if there will be people of different race in heaven. My first initial thought was "yes, of course". But then I started thinking about how Joseph Smith said that they were brilliantly white, etc. and how one of the apostles said that the "official" picture of Christ did in fact look like him (and thus Heavenly Father looks like that). So, if we are created in the image of God, and he looks like that picture, then can there be race in heaven? The other thought is that darker skin is the sign of the curse that came upon the posterity of Cain for his sin (the actual curse was the removal of the priesthood from his line), so could there be dark skin because that was essentially a deformation?