My friend works for Westminster and I'm actually playing there tonight so I'll ask about them spreading the rumor. But if I remember correctly Anaheim/Disney Ice used to give out the same penalties for not having exact jerseys.
out of our 10 games this past season at anaheim, i didn't see one team where EVERYONE had a matching jersey. i'm sure there is a rule about it, but they don't seem to enforce it.
the problem that i had with westminster was that they would come into our locker room while we were changing and tell us that they were gonna give us a penalty once we hit the ice if we wear that jersey. and it's not like our team was wearing dark blue jerseys and someone was wearing a pink one. it was all white jerseys, and i had a black stripe on the bottom of my white jersey. and they still gave me $h1t about it. when we finally get on the ice, the other team has non matching jerseys and they don't give them any $h1t at all. that's my complaint.
and if you call them out on it, they just ignore you or fine you. this is the first league i got suspended and fined for trying to break up a fight. i'm not even going to go there...