Well, I didn't want to post b/c of my affiliation - I didn't want it to seem like I was defending them just because they are my sisters. But SoCal said what I think, too. If the rules said "You must wear the Go Greek shirts which cannot be altered in any way" then they should face the consequences. If the rules didn't say that, then more power to them!
I remember when I was Rush chair we did the Go Greek shirts for Round 1. Same shirt, different colors for each house. Alpha Chi also wore red bandanas - on necks, wrists, hair etc. It totally made them stand out and was a great idea. Of course, we were all jealous, but what could we do?
Also, as far as everyone scrambling to get letter shirts together, every house was in the same boat as you - including the Chi Os. So even though I'm sure it ticked you off, I bet the PNMs didn't even notice. Seriously! No worries.
I also didn't post b/c I didn't want to seem nasty with this next comment, and I really don't want you to think I am, but...Isn't it a rush infraction to talk to your Gamma Chis? It was at my school so I thought that part of your post odd. But maybe it is ok at Purdue. I'm not trying to be mean, just asking! I swear!!!
Good luck with the rest of recruitment!