Okay, so this may be a dumb question but I'm going to ask it anyway. I am expecting an iPhone 6 Plus through AT&T(not sure if that detail matters or not) within the next two weeks or so or whenever. I ordered it in space gray/black. Let's say I get the phone and I decide I like the way the silver/white looks better. Would I be able to go to the Apple Store and switch mine for one of another color? If this has already been asked I apologize but I checked through several pages already and I did not see anybody else asking and I do not feel like scrolling through more form pages.