How to replace a black iPhone 5 for a white iPhone 5?

I recently received an iPhone 5 from Verizon, but the person that ordered the iPhone for me ordered it black and I wanted a white one, I tried to cancel the order but the guy at Verizon said that it was too late, could I just buy an unlocked white iPhone 5 and move the SIM card from the black one to the white one? Or would I have to go to Verizon and activate it all over again, if I get the white one I would just sell the black one, its brand new

What difference does it make?

It does not matter what color your iPhone is.

Exchange it or sell it

Yes, you can. I can confirm that the Verizon iPhone 5 is indeed GSM unlocked. Even though I bought an iPhone 5 from Verizon under contract, I was able to cut down my AT&T Micro SIM, and use it in my Verizon iPhone 5 to pick up an AT&T signal. By doing so, I was able to hop onto AT&T's HPSA+ network, or "4G" as they so ridiculously name it.

AT&T's so-called 4G speeds are nothing like true LTE speeds, but they are a bit better than typical 3G speeds. But the big news here isn't about speed. The big news here is that we have confirmed that you can use a Verizon iPhone 5 on AT&T or T-Mobile, freely, even if you're a brand new customer under contract.

I'm pretty sure that you can just take it into the store and tell them that you got the wrong one and that you'd like to exchange. You shouldn't have gotten it activated, the store should have been able to switch them while it was still unopened. My mom just got an iPhone 4 upgrade and they told her that she could trade in her old phone for like credit. So considering its brand new and black and white are the same price you should be able to do it that way.