User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-5043481-20130101122918/@comment-4212769-20130102143105

The problem here is that it's hard to apply.

The hair color depends on the amount of Melanin produced, scripted in the DNA code. The more melanin the darker the hair. Red hair has a different type of melanin.

But that one subspecies can have the codes of such different colors is pretty unlikely. And they would depend on different pigment types that are a lot more different than the types of melanin that we have.

And I have to agree to the last anon. It doesn't explain why monsters with the other colors have different abilities.