The whole notion of rendering judgment on someone on account of the color they choose for their iPhone is ridiculous, if you ask me. This is America...choose whatever one you want!
Also, I don't subscribe to the notion of certain colors predominantly "belonging" to one class (in this case, gender) of person. If you like a color, go for it. There are plenty of truly important issues to worry about in the world in which we exist. Suffice to say, phone color is not one of them. And I don't say this to chide anyone who asked for opinions related to the idea of men having a Rose Gold iPhone, by the way. Everyone can use a little reassurance every now and then, for one thing or another.
I'm from the UK and it's very negative. People are insecure and usually just follow the norm. Otherwise you will have "the lads" out beating you down with some banter so they can gain validation from their peers.