I've already completed the initial process (just needing to send in my old phone). I'm seriously considering swapping my silver version for the black version at my local Sprint store, today is my last day to do so. If I've already set up the trade-in with the serial # and info of my original silver model, will this be an issue if I go ahead and make the swap for the black? It would suck to forfeit $100 just for swapping out for the black model, which is what I would've pre-ordered originally had it been available. Anybody know, or should I contact HTC directly? Appreciate it.