All coral typically take some time to adjust to a new tank and new lighting. Almost all change color in some way, either temporarily or permanently. This may be a natural response. Unless you see tissue receding or a gaping mouth, and it isnt extending and flowing, it should be fine. Give it some time and tlc. Don't make any drastic or sudden changes. Nothing good happens fast in a reef tank
Also when asking for help, another good practice to be in is to give some specs on your tank. What size is it how d, what type of lighting, what are your basic Parameters and what is your stock list. This will help us help you better.