What i'm trying to say is that going out of colors to impersonate another gang to gain an advantage is a tactic and not really a "clapping" mentality and shouldn't be classed as a rule breach, because this tactic has been used in the World wars multiple times, and has worked out for some people, as well as going wrong for them.
And for issues it would cause, if one person decides to wear different colors to their gang in a 20v20 fight, and this was reported, the whole situation would most likely get voided. And not to mention, in the WW2 a lot of people would go undercover to the other side just to sabotage the opposition and it would work out, if planned properly. In my opinion I don't think going out of colors should be classed as NRP, because its a tactic that could go wrong but if used properly and strategically it would work out and I think the only reason OP made this thread because of how much its happening to his gang, with no way to counter it, and not because they believe its NRP overall, I believe.