standard-bearer vs color bearer

standard-bearer and color bearer both are nouns.

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

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

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

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