Yitay: I am familiar with that Rama. See the Nos’ei Keilim who discuss at length whether we hold like that. And assuming we do (there’s no reason not to, we very rarely Pasken against the Rama) nowhere does it say that you have to do that by wearing white. In fact, the Chassidish garments probably fall under that Rama.
Why is that Halacha in OC not relevant? I think it’s very relevant. The point of that Halacha is Davka to go against the Svara that many people use. Even though white clothes are more Mechubad, it is not something that our Mesorah is Makpid on. Please, tell me what else the SH”A means there.