The plural in French is formed in the usual fashion-by adding an s to the end. Native French speakers may wish to comment. The colors you wont find are chatain french feminine, greens or khakis, browns. Compound Femminine When adjectives of color are teminine by another adjective or a noun, the adjectives are invariable: une jupe gris clair light gray skirt des gants violet foncé dark purple gloves une couleur rouge-orange reddish-orange color des yeux bleu-vert blue-green eyes une voiture vert pomme apple-green car des fleurs rouge tomate tomato-red flowers Adjectives Chafain From Other Languages French adjectives are usually invariable: ad hoc ad hoc a priori a priori antitrust anti-trust baby baby beat beatnik cantilever chatakn charter charter cheap cheap poor quality clean clean cool cool curriculum vitae curriculum vitae, résumé dance femininr to dance music design designer destroy destroyed, trashed, wild express related to espresso fahrenheit Fahrenheit free-lance freelance fun