I can`t find anything particularly wrong with this usage, but the word (as it is used here) seems to be part of scientific vocabulary. It is not very common to find emotionally charged words (like excellent ) in scientific texts, although your individual style or writing or the tone of your text may allow for such fluctuations.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
AnonymousShould I change the word give off ?You obviously use it in the sense of "produce" (heat, light or smell are the most usual collocations). Can coloration be produced? Yes, run an exact search on "produce coloration." Concerning the "give off coloration" phrase, it is extremely uncommon, but I dare say we shouldn't think of it as entirely incorrect.
AnonymousShould I change the word give off ?"give off" normally means something like "emit" or "discharge". In other words, when X gives off Y, the thing Y, whatever it is, separates from X and is emitted into the surrounding milieu. This does not seem to be what you mean.
AnonymousI underdand, how can I make it sound better?algae grow on their fur, producing a coloration that provides an excellent camouflage