Well, I love this illustration.

Kuma-Koban is kind of a pain, because I haven't specifically worked on color terms. Here are some color terms, which are really kind of vague.

(ə)rutʰro-	"red"
motʰero-	"green"
badyo-	"tan, bay (of horses)"
cer-	"grey"
cyē	"dark color"
kursənó-	"black"
kʰūlon, ausom	"gold"
kónk-	"amber; honey coloured"
xarguno	"silver, white" (the metal itself is xárgut)
alpʰó–	"white, pale"
cʰel	"yellow"

I ought to at least figure out what a typologically appropriate color scheme. It looks like Kuma-Koban would be a type 11, since they have basic colors up to brown as well as grey. I should make a chart, since the brown colors are kind of vague, and they might have terms for dark or low saturation colors generally (based entirely on glosses, that is). Only problem would be  that this might suggest a more sophisticated system than was likely to exist at the time, in a generally pastoral society. I really have no idea.