Not really, as this is also essentially a minor cosmetic difference. There is as much difference in builds within members of the same race as there is between races.
Going back to my cat example- I have two cats, one is a tan/brown, 20lb Maine Coone, the other is an 8lb, white/grey domestic short hair. These cats have completely different builds and looks about them, but they recognize each other as cats and make no distinction based on minor cosmetic differences. The animal world is full of examples like this where members of the same species look different from one another, but make no distinction based on this fact. To me, that suggests that our concept of race is a pure cultural creation.