Dave were your maximas "blotched" or "spotted" when the colors started returning? After getting my system back on track, the excurrent siphon was the first region of the clam to start showing color, then I started noticing these blotched areas appearing, as several months have passed the blotched areas have somewhat grown together, forming a richer blue color, with little blotches of brown still remaining. It's been pretty cool to watch and I couldn't be happier that I woke up and snapped out of my reefer slump... in time to save this beauty, and of course, the rest of my corals and fish. Tank is doing VERY good now, no more slacking here!