Medium to high light. Coloration will change according to light. I have a mini colony and a frag in different levels in my tank and they’re both different in coloration.
Mine is at the top at 375 PAR with tons of flow. Personal I find it not much to look at from the side which is my normal view because it is so high up but it is beautiful from the top down. If I could do it over I would put it lower to enjoy the colors better. I have seen one low, about 2/3 down, in a tank and the colors where amazing.