Edit: "maroon" can be confusing to French speakers since "marron" in French means brown.
Well, now you've piqued my interested. Please, get started on violet!
It is actually also an "official" web color #C3B091
https://en.wikipedia.org/wiki/Khaki
The "light khaki" is definitely "yellowish", whilst the "dark khaki" is someewhat more "greenish".
It is entirely possible that the confusion, at least in English, came continuing to call khaki the uniforms even if the colour was actually later changed to a grey green called "olive drab".
Definitely not military green (which I would call olive drab, but that may be from building too many Airfix models as a child).
Khaki is also not the fine selection of beige as seen in the chinos picture in the article.
Edit: This colour is what I could call khaki: https://www.betabrand.com/media/catalog/product/b/r/british_...
"Oh, beige-green, sort of."
:-)
"ljus, gul-brun-grå färg som påminner om (väg)damm el. sand: kakifärgad HIST.: sedan 1904"