Those that posted its not doable should do some research before posting its not possible.
Good news op! changing the ring around the home button is very possible. Although doing it yourself is not a good idea at all. Check this company out they can change the entire housing as well as the home button but it may be a bit pricey. Im guessing around 100-150 to change the entire housing but your iphone will be very unique.
I believe right now theyre still working on taking apart the iphone 6 and getting parts but you should definitely call them for a quote if you're interested
Here are a few examples. Enjoy!
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