How to change my iPhone 5 to white?

Okay. So I purchased the black iPhone 5 a few months back, but I find the black to easily scratch and chip, whereas on the white model it doesn't scratch as much. Something to do with the black aluminum to be anodized. Anyway, I'm obviously not going to take it back to the Apple store because that's a waste of a phone. I just want to know if I can take it anyway to switch the casing to white.
Any help would be greatly appreciated!

Change the back

Get a TPU gel case for it. They come in all colors, even patterns and add a lot of protection. Amazon has a lot to pick from. Just search "iphone 5 tpu case"

Everything you need is right here!
http://www.maclife.com/article/gallery/8_ways_make_your_own_white_iphone_4

You can buy the housing on eBay and change it yourself. It's just 2 screws at the bottom either side of the charger port