THANK YALL SO MUCH seriously, apologies for bein’ confused 8,D 

Kuros nails and horns are Kuronium, while they can have fur, hair and feathers, if that counts? Scales can grow over the horns and form facial structures, but it’s usually made of scale rather than the keratin I think, something stronger and more resilient. Scale can still be damaged and broken off, and there’s different types of scale that could be thinner, more flexible, etc. Like the spurs on Feuriah’s wings are actually scales that she is able to flex and flare up during flight, and a lot of dragons have scale covering their horns and other exposed Kuronium bits 😀

But I agree with the first ask too, I can see that fitting with Chroma! 

~Weird