they are very hardy... mine doesn't like strong lights... If I move it up, it loses color, but If I put it down near the bottom the color comes back
Ya Rash, exactly. They tend to lose pigment as they get blasted more and more by light. Most LPS will change color based on the amount of light exposure.
I am not sure if this is science or fact, but from my observations of my own LPS corals. It seems that as they get more and more light exposure, they begin to get less and less color and more and more brown. Just like humans the flesh becomes more colorless and darker to protect itself from the sun's rays.
LPS corals do the same, if you have ever seen say an acan colony getting blasted by light, or a chalice colony that is getting blasted by light, they usually have a brown tinge to them. This is there sun tan, they are changing colors in order to protect themselves from the sun's rays, again just like human skin does.
If you take the exact same colony and put it in shade, or almost no light exposure, the colors will come back and they are usually much more vivid and crazier than ever. The lighter the colors (Reds, yellows, oranges) the more sun is allowed in to the tissue. The darker the color (Greens, blues, browns) the less light is able to penetrate the tissue and it protects the zooanthelae (SP).
