chestnut-colored vs chestnut-coloured

chestnut-colored and chestnut-coloured both are adjectives.

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

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

chestnut-colored and chestnut-coloured: having the brown color of chestnuts

chestnut-colored (adjective)	chestnut-coloured (adjective)
having the brown color of chestnuts	having the brown color of chestnuts