The comment about bring a dark and white (but not grey or yellow) is unfortunately right. I ended up selling my yellow Vancouver Canucks 'V' jersey because I would get a few guys constantly asking which side I was on. When I was playing beer league we had one team that was red and our team that was orange - everyone seemed to be able to tell who their teammate was, but in scrub you are always going to run into guys that complain about your jersey if it isn't white or very dark. when i play scrub with an unfamiliar group, i just make sure i play as clean as they are - don't make small hooks, holds, pushing in front of the net, etc. unless that seems to be what everyone else on the ice is doing.