British spelling vs spectral colour

British spelling and spectral colour both are nouns.

Word	Noun	Adjective	Verb	Adverb
British spelling	Yes	No	No	No
spectral colour	Yes	No	No	No

British spelling (noun)	spectral colour (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	a color that has hue