Just got mine about a month ago (L52). Color seems to be fine. Very nocturnal fish, hides in particular spot in tank set up where I can only view underside during daytime. Is growing pretty fast too. I also have a L66 king tiger pleco which by your description of pleco wanted may be more up your ally as far as coloring. I use dark substrate with L66 and dark substrate and light sand with L52. Also be sure to have a piece of driftwood in tank with pleco (chola being the best option).