colourful vs British spelling

colourful is not a noun while British spelling is a noun.

Word	Noun	Adjective	Verb	Adverb
colourful	No	Yes	No	No
British spelling	Yes	No	No	No

colourful (noun)	British spelling (noun)
	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')

colourful (adjective)	British spelling (adjective)
having much or varied color
striking in variety and interest
having color or a certain color; sometimes used in combination