Just picked up 2 6" Reds from lfs for $24.99 ea. They were in a tank with off white rocks. As soon as I put them in my tank, I noticed their colors change. They went from silver and a little bit of red, to dark grey and a lot of red + orange. I have mostly black, and off white rocks, and a black background + dimmed lights. Just my observation.
-Kevin-
-Kevin-