The regulations on the color of referees' uniforms mainly emphasize that they should be clearly distinguished from the colors of the uniforms of the players on both sides of the game to ensure the visibility and fairness of the referees in the game. The specific implementation of this regulation varies in different sports and occasions:
In basketball games, the home team referee usually wears a light-colored vest (usually white), while the visiting team referee wears a dark vest.
In table tennis games, the color of the referee's uniform should be clearly distinguished from the color of the game ball to avoid confusion in TV broadcasts.
In pearl ball competitions, each team must have at least two sets of uniforms, one light and one dark, to ensure that the referee can easily distinguish the players of different teams.