These guys are right on the ball. My friend and fellow CPF member and I just swapped emitters on my C2 last night. I really liked my C2, it had great output with a nice mixture of spot and spill, but it had a terrible purple tint to it. Swapping emitters was very easy....I dropped in a warm-white Q2 bin and now the tint is perfect! No change in overall output, but the light is 10x better now that it has a nice tint. Good luck with your swap...