The more I think about it, I think I'm only going to get one set.
Knowing Hasbro's penchant for repaints, I'll holding out for the inevitable 501st, Utapau, Felucia, Shocktrooper colors.
I'd only need one set for each color, so no worries on my part. I'm not looking to army build these and if they never come out with the other color variants I mentioned, I'm not worried about it.