What will girls think about a guy they're interested in dating if he had a red iPhone? I have a space grey right now and no problems.
I'm late on reading and commenting past this post so forgive me if this has already been stated; opinion.
I think you/said-guy needs to check about themselve first and foremost of what they like, what their comforable with, and what their comfortable/happy in choosing their choices and disregard what others think. You cannot change their opinions, only show them another opinion and hope they may agree or respect it. It's all about you - without needing to be disrespectful about others. You do you ... let them be them!
When all else fails ... co-ordinate and have fun with it:
Suit ... red tie and hankerchief
street ... red Kobe XI's and T and cap or Jordan 6's and the same.
Bonus if you're a bright headed ginger, spike the hair if you can.
red ferrari gloves if you're driving in any above scenario.
Thunderstorm date ... red topped umbrella,
you get the idea!
Do you .... but if you feel it's not up to fashion par ... do it in your own style ... this way you're always comfortable