I bought a scroll coral (as it had a very nice mushroom), and I was aware that the coral was pretty crappy (as in, pure brown), it has since started to perk up nicely, and is starting to go yellow. My claustria (Bright green candycane type thing), when I got it was pretty sick, but is looking much better now. A "White Acro" (beige really) that I bought off TeL is now going bright green, and should be a stunner. My organ pipe is much the same, its now a sea of green, however, the only coral casualty I have had is a sun coral (which died), i was unable to keep it fed without polluting the entire tank - It just wouldnt open its polyps.