Well some will hold there color, some will become more colorful and some will become brown. There is no real way to tell. I am experiencing something wierd with one of my acros, the original frag has maintained it's color very well, but all the new branches are much lighter than the original, go figure
Simple fact is, there is no way to tell how they will react with MH
lights or PC
lights or VHO
lights etc. FWIW, When I had my 150, I hade 750W OF VHO
and I kept Pavona (one I forgot to put on the list), Hydnophora and stylophora, as well as several T. maximas a T. crocea and a T. derasa (all clams were on the bottom of the tank). None lost any color and the pavona went from brown to green, the hydnaphora went berserk growing at an astounding rate and the stylophora kept it's color and developed some very pretty pink tips.