There’s a combination you may never see again.
There’s no Klingon word for green?
Why comes?
-FrL-
Klingon, so far, only has four basic color words: white, black, red, & not-so-red.
I googled “klingon color” & found this page: A Quick Reference to Colors in Klingon – Klingonska Akademien
It expands on this, but doesn’t say why. I think it’s just a silly “cultural” touch by the linguist who designed the system.