Canadian spelling vs colourful

Canadian spelling is a noun but colourful is not a noun.

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

Canadian spelling (noun)	colourful (noun)
English orthography used in Canada (characterized by 'analyze', 'centre', 'useable')

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