I have NW, CW, WW, RB, and Pink on my fixtures. They are much larger though. If you do several colors in that small of a setup, I think it's important to group them or you may get some type of spot lighting of each color. Just some things to consider. And I don't know if anyone really knows yet, but I heard NW was the best for whites...that's why a majority of my whites are NW, added the others for a fuller spectrum. Have had success so far.