"Bleached" meaning not so healthy. I don't think I'd go back to that specific LFS except maybe to return your coral and give them a lecture about unethical selling practices...lol. Or they possibly didn't know what they were selling, in which case, I'd edit the lecture to one about being in business without knowing what the heck they're doing...lol. I sure hope you didn't pay much for it. If so, you got taken...unfortunately. If you paid anything over about $35.00, you paid too much...and that's the price for a good sized HEALTHY Fiji leather.
Given the right water conditions and lighting, chances are your leather will recover.