What's he mean by "color man" here?

Native speaker’s answer
Rebecca
By "color man," he means a sports commentator who assists the main commentator of a match or game when there is no detailed commentary on what's happening in the game. "Color man" or "color commentator" is considered Canadian English now, "game analyst" and "match analyst" is more commonly used in the US. Ex: The color man gave some great statistics about the new players. Ex: You'd be a good game analyst since you know so much about basketball.