Albino is a birth defect that causes the natural blue/grey color on a Channel Catfish to not add that color pigmits. This is natural as it happens throughout the world. SOme Albino Catfish still have some true blue/grey colors on them. You might receive a double colored one or one with more blue/grey.
Although this scary note is in place, do not let it fool you. This note is here to protect us in case if you happen to receive one like that. Of 1000 fish, only 10-30 fish will be like that. The rest should be pure albino.