Regardless of if lighting is great for gaming, there is a guy on deskthority that painted his black widow with white, and then simply put everything back together, and it came out looking really nice. You should look that up, as I don't really remember the direct link.
Obviously in the real sense backlighting does absolutely nothing for a gamer, as his eyes should be on the screen anyways, but I don't care what people's preferences are. Unless you bring your modding up a notch, you won't find a white keyboard with backlighting.