but it seems to me if it has brown its probably not an amel.
amelanistic means by definition it cant have brown pigment.
that said, perhaps your thinking of some of the "hypos" ive seen? or maybe you mean the kind of purplish color that baby amels have, before that area turns white?
first off - amelanistic means it cannot have BLACK pigment.
secondly, some young amels have very dark "white" bands which seem to be brown, but then do bcome white/gray. Not all have high contrast white bands.
The most common form of biological melanin is eumelanin, a brown-black polymer of dihydroxyindole, dihydroxyindole carboxylic acid, and their reduced forms.
if the desity of melanin is high, then the color will be dark brown or black. if its not so dense, then its brown/light brown. so... lets not be so quick to jump to conclusions.