But how to distinguish a low quality yellow belly from a normal? I have two yb's and they definitely doesn't look as great as the really good examples I've seen of them, but at least the one of them seems very YB-ish and the other seem like a reduced normal with a head stamp and some flames and busy pattern along the belly. How to tell if it's yb or normal then? How much yellow color up their sides is good enough to tell if its yb, and should there be flames all the way from head to tail?