color bearer vs standard-bearer

color bearer and standard-bearer both are nouns.

Word	Noun	Adjective	Verb	Adverb
color bearer	Yes	No	No	No
standard-bearer	Yes	No	No	No

As nouns, color bearer and standard-bearer are synonyms defined as:

color bearer and standard-bearer: the soldier who carries the standard of the unit in military parades or in battle

color bearer (noun)	standard-bearer (noun)
the soldier who carries the standard of the unit in military parades or in battle	an outstanding leader of a political movement
	the soldier who carries the standard of the unit in military parades or in battle