I’m confused, it’s not like they wear davka blue shirts at Chofetz Chaim right? Most of the guys are still wearing white shirts I assume. They just allow other shirt colors?
Even by the pro-white-shirt argument, allowing a diversity in shirt color would just allow you to gauge the seriousness of a given bochur. If you make them wear white shirts, how can you tell who the REAL white shirters are, and who are just doing it for the dress code?