Illegal Undershirts Prior to Start of Game

[acgod24]

Had this situation come up and wanted to get opinions.

Prior to the game, Team A had been practicing with their warmup shirts on. During the captains meeting, Team A coach is asked if team is properly equipped and of course he says yes. Starting lineups are announced and kids still have warmups on. They shed the warmups to come out for the tip and 3 kids have illegal undershirts...black undershirts with white jerseys.

Now obviously the kids can't play with them and by rule they can't take them off at the bench. They need to go back to the locker room and change. Now, by rule, the coach can't send 3 other players in to start the game otherwise it would be an admin tech for changing the starters. Is it acceptable to hold the game to let them change or is a DOG warranted here? Couldn't find this in the case book but would like a specific rule reference if possible.