That's what I thought, but someone pointed out that that picture's from the pilot episode. They have apparently decided to change their minds on who her dads are.
Brian Stokes Mitchell is black.
Granted, his skin tone isn't as dark as the guy in the original picture of Rachel's dads, but... *shrug* He'll be a lot of fun to have on the show, so I'm not really complaining that he doesn't look a lot like the guy in a picture we saw for about two seconds in the pilot episode.
Well I don't know that actor, and in the photos ddin't look very black to me, but..
anyway it'll be funnier with him it's ok for me, but I think that with that photo is funny enough XD