Lost Queen : That it does, yes. Even our teeth are the same color as our horns, though I have seen those that have multicolored horns/teeth, etc. Those are also rare too, and there’s a reason why.

Kurosia was the heart of all Kurosians. It was where we as a species first came into being. The kuros that lived here were of silver and grey skeletons, sometimes black, but other colors such as copper, gold etc are actually from past cities that were destroyed. Those with colored horns are the children of those survivors. So unfortunately, there were more silver/grey Kuros than other shades due to Kurosia being the longest standing city with the highest population.