dyed vs coloured

dyed is not a noun while coloured is a noun.

Word	Noun	Adjective	Verb	Adverb
dyed	No	Yes	No	No
coloured	Yes	Yes	No	No

As adjectives, dyed and coloured are synonyms defined as:

Other synonyms of dyed include bleached, colored.

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

dyed (adjective)	coloured (adjective)
(used of color) artificially produced; not natural	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