+1 Salty B
It really doesnt look too good, it looks like its pretty badly bleached. They are usually a green, yellow or red color. Its going to take quite a bit of work to get it back, and they can be a demanding coral anyways. Make sure you are spot feeding it a few times a week with cyclopeses or similar. It is a super slow eater so you are going to want to cover it with half a soda bottle while it feeds.