contrasting undershirts

[26 Year Gap]

Had a game last week where the visitors didn't shed their warmups till tipoff and you guessed it, two guys had white tee shirts under red jerseys. One was a starter, so we sent him into the corner of the gym under the bleachers almost so he could shed the illegal garment. And we pretended we did not see him, then started the game with a jump ball. No T was assessed. Would any of you handled this differently? i.e. "Coach, you have to get a sub in and send those guys to the locker room to change." Thanks.