It has to be within 14 days? Because I'm interstate and my 14 days end today, but I go back home tomorrow, which is 15 days... Could I still go and would I need an appointment to change my colour?
First thing: You have to have purchased the phone FROM Apple. I say this because when I was at the Apple Store this week someone had purchased their phone from Verizon and wanted to exchange it at the Apple Store.
Second: You have 14 days to do an exchange. HOWEVER, you may have some luck if you go in there on day 15. I know at one point I returned an iPad on day 15 and they let me do it.