The good news is yes, most of the parts are replaceable. The bad news is good luck sourcing the parts you need. I have a new pair of the white 3s that I was wanting to do some customization to with different color buckles, straps, etc but have had no luck finding a distributor that keeps a variety of those parts in stock. Talked to someone with the importer on the phone and he said they get a batch of parts from Italy maybe twice a year. No luck so far so I will probably have to just leave them "stock". I'm old and slow, so I like to tinker with stuff like that. If I was young and fast I'm sure it wouldn't be a big deal!