For those who received a confirmation email for upgraded bands but unexpectedly got solid colors, call the number on your packing slip. They were able to work things out. They allowed me to choose a magic band from
shop disney (not a limited release or dooney & burke) and pay the $10 upgrade fee and they will ship to me. They also updated my notes and sent to billing to make sure I was only charged for the upgraded ones that came today and not for the grey one. Then they took cc info to pay for the replacement I ordered today. Unfortunately you cannot customize, but essentially I am getting the band I originally ordered as I think most if not all of the upgraded bands are still on Shop Disney's website.