My lawnmower blenny changes all the time from a white to a dark almost smoke back color. Ive often seen bits of red and blue spots that are noticeable under certain situations and lighting. Every time i look at him i see color change or something i didnt notice before.
The red is mostly in the large sail fin. Ive never heard anything about color being related to any problem, mine is fat and healthy.
29g Mixed Reef, 150w 14k Phoenix MH w/ Moonlights, Reef Octopus BH1000 HOB Skimmer, Ecotech Vortech MP10es, ReefKeeper Lite (Plus), PH Probe, Temp Probe, ATO, Carbon/GFO Reactor.