I keep mine in lower/moderate lighting. I think the colors look best when they aren't getting blasted. Low flow too for me. Color is awesome on mine, and I've always thought they were one of the most distinctive palys I've come across. I keep mine in the sandbed under six 54w T-5's and they seem to love this. They don't mind getting a little bit more shade either.
Growth is spectacular for me, but I think this is going to be an individual thing. Everyone's results will vary. I got two polyps from WWC early, near the end of Feb. '09. By June I had probably about 25-30 polyps. Right now I have no idea how many I have exactly, but I'd say even with regular fragging I probably have in the neighborhood of 100 polyps spread through the system. The polyps coming from Cuong probably came from me originally, though he may have also gotten some elsewhere. They have always proven very hardy for me, as much as any other Protopaly (purple death, nuke greens), though they do take longer to color up to full potential (size-wise).