User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-6050823-20130206223334/@comment-4933023-20130209225516

It's just strange how we have gold and silver raths there, also...

They're definitely subspecies, but why would they adapt into gold colors? I can see how silver could be useful since there's heavy fog at the Tower... But why gold?

We have pairs of two gold and silver subspecies at the Tower, so there has to be a reason why two different species are gold and silver.

Maybe a mineral or staple part of their diet changes their color?