garnet-coloured vs coloured

garnet-coloured is not a noun while coloured is a noun.

Word	Noun	Adjective	Verb	Adverb
garnet-coloured	No	Yes	No	No
coloured	Yes	Yes	No	No

garnet-coloured (noun)	coloured (noun)
	a United States term for Blacks that is now considered offensive

garnet-coloured (adjective)	coloured (adjective)
having the color of garnet	having color or a certain color; sometimes used in combination
	(used of color) artificially produced; not natural
	having skin rich in melanin pigments;
	favoring one person or side over another