In the first picture from the OP - the one that looks gray is the black one, and the one that looks black is the gray one, right? It's a funny optical illusion, because at first I was puzzled. Took me a while, since in the first pic the "black" one was bigger, but then in the second pic the black one was smaller.
A good example of the evils of flash photography...
I didn't use a flash - and the colors were correct. I flipped the units over to show both sides: The V2 is black on one side and silver on the other. Compared to the black on the V2 the V3 does look a little "gray".