colourful vs colored

colourful is not a noun while colored is a noun.

Word	Noun	Adjective	Verb	Adverb
colourful	No	Yes	No	No
colored	Yes	Yes	No	No

As adjectives, colourful and colored are synonyms defined as:

colourful and colored: having color or a certain color; sometimes used in combination

Other synonyms of colourful include colorful, coloured.

colourful (noun)	colored (noun)
	a United States term for Blacks that is now considered offensive

colourful (adjective)	colored (adjective)
having much or varied color	having color or a certain color; sometimes used in combination
striking in variety and interest	(used of color) artificially produced; not natural
having color or a certain color; sometimes used in combination	having skin rich in melanin pigments;
	favoring one person or side over another