neutral-colored vs neutral-coloured

neutral-colored and neutral-coloured both are adjectives.

Word	Noun	Adjective	Verb	Adverb
neutral-colored	No	Yes	No	No
neutral-coloured	No	Yes	No	No

As adjectives, neutral-colored and neutral-coloured are synonyms defined as:

neutral-colored and neutral-coloured: having a color that does not attract attention

neutral-colored (adjective)	neutral-coloured (adjective)
having a color that does not attract attention	having a color that does not attract attention