So I have a 90 gallon mixed reef. I have various sps corals including birdsnest, montipora, and acropora. All but two of my sps are doing well. And both are Millepora. My garf bonsai acro and my Oregon tort acro are growing and look great. For some reason my rose Millepora and blue millepora have lost their color. They have great polyp extension and are encrusting fine but aren't growing too well. The biggest concern though is the coloration. They have totally faded. I have them both about 3/4 up the tank. Flow is plenty, and the lighting is strong led. Any reason for this? Parameters are all fine.