lol, I agree, I sense a racist problem with political correctness if they stick to Black and White, although they may change by the time they are released in english.
I do agree though that it sounds like a whole light/dark thing they are going for, since they released the PokeGod Arceus, these legendaries will most likely be angel/devil style, going with the whole yin/yang thing. The third one will also most likely be Gray.
I love the new graphics, its like a gradual evolvement from top down 2D to 1st person 3D, almost like they are building towards an platform style (or dare i say MMO) game.
Can't wait to see all the new pokemon!