I have a decent little sized colony of eagle eye zoas. I had an issue with my tank and several of my corals closed up but that issue has now been resolved. My zoas were closed for days and finally opened back up but are now green. Another kind I have has also had a difference on color but not by much. Anyone know what the problem is or how to fix it if I can? All my params are normal. Trates are around 15 but they have always been like that and everything else seems fine.