Ah should have made that clear when I posted. I'm on PS3. I saw commercials for the game and things just look much better (from what looks like ingame)... I have problems with things being too dark as well, but I think that's how the map really looks because I've adjusted the brightness/contrast and it's still dark.
Just wondering if there was some setup that I should use for the TV. But if not... oh well it's still amazingly fun.