Noun
color commentator (plural color commentators)
(US, sports) At a sporting event, a member of the radio or television announcing team who assists a play-by-play announcer. Provides insight into strategy, player performance, background information, etc., and often light humor.
Synonyms: color analyst, color announcer
Hyponym: color man
Color commentator Matt Harpring, who lives most of the year in Atlanta, even when the season is in full swing, joins occasionally. Source: Internet