Returning iPhone 5 at bestbuy without receipt?

I got my iPhone 5 as a present & don't have the receipt. It's 2 days old & I was wondering does anyone know it I can exchange it at bestbuy because I have some scratches on the phone out of the box. Brand new & also do you think they would let me exchange for a diff color?

Best Buy's Return & Exchange Policy

The original receipt, gift receipt or packing slip is required for all returns and exchanges. If returning or exchanging an item in a Best Buy store, a valid photo ID is also required.