The website screwed me over on the preorder night. I was wanting to get a Black iPhone 7+ 128 GB but due to errors I had to settle for the Gold. I have my heart set on a Black (I'm not even going to try and get a Jet Black) I am hoping to receive my Gold one morning of the 16th at the UPS warehouse and drive up to the Apple Store Saturday morning on the 17th to see if I can swap it out for a Black model. How possible/realistic is this?