You need special approval (visitors) to not wear "light color" jerseys at home.
NCAA Hockey rulebook 9.1:
The visiting team shall wear dark-colored jerseys and stockings; the home team shall wear light-colored jerseys and stockings. Uniform numbers must be a light-colored number on dark jerseys and a dark-colored number on light jerseys. All players of each team shall dress uniformly in that day’s game jersey. Light-colored jerseys (e.g., white, gold, yellow or light blue) may be worn during the regular season by the visiting team only when the teams have agreed before the game. If the teeams are unable to agree, the visiting team will wear dark-colored jerseys.