Copied from "the Hybrid and died fish.....a list of fish!!, This is what I found on the topic...hope" thread:
*Albino morphs of the Oscar are being painted to produce Blue Oscars, Red Oscars (though there is also a Red Oscar that is not painted), Yellow Oscars, Blueberry Oscars, Gold Oscars (though I understand that there is also a Gold Oscar that is not painted, but has a more yellowish tint to the normal salmon to orange coloration) and Purpe Oscars. These Albino Oscars that have either been injected with dye or placed in a dyed tank with additional chemicals that damage or destroy the fishes natural slime coat so the dye can soak in. The fish tend to be sickly and prone to disease and if they live long enough the color will fade. This is a cruel practice and I urge the reader not to purchase these fish and condone it.
Yes blueberry oscars are dyed and that makes thm a poor choice for a fish, they grow and the dye looks bad and greyish, they had to undergo a painfull ordeal to be dyed (scrape off all of your skin and paint yourself and see how it feels) and they wont live nearly as long because of it. Buy a fish that hasnt been tortured for a temporary splash of color will you.