It is possible that your Damsel is faded colorwise due to the Lionfish in the tank! Being scared will cause fish to lose some of their coloration.
I don't think temperature is the case in this scenario, however, SNAKE is right, your temp is high. Damsels are found many times in shallow rock and coral reefs areas where the daytime sun heats the water up to a higher temp than say in a back reef area etc. _________ 125gal.w/Mag9.5 return(dual megaflow)>Mag7 pump Aqua Cev180skimmer.Wave2k Hamilton Reefstar(2)250watthqi(mh)pend.a Yellow, Naso Tang Red Lip Blenny Percula Clown Demoiselles Niger Trigger F. Wrasses Ceriantharia Orn.Shrimp and Stars Hermits Queen Conch asst. snails> Stars Zoos shrooms Montipora Brains Gorgonians Favia Turbinaria(large+small polyp) Acropora Xenia Tridacna (CroceaMaximaSquamosa) Leathers <35+75gal.reef tank as well> 
"IF THE PHONE DOESN'T RING...IT'S ME"  jb  |