I absolutely respect and understand the view against altering original Rolex timepieces in any way.
In my own decision making process, I decided that having 100% original Rolex parts was essential and nonnegotiable - and although any alteration is indeed an alteration on the fidelity of a Rolex - I was comfortable with an aftermarket process, as opposed to aftermarket parts.
It is also worth noting that immediately after my watch arrived I was able to have the piece authenticated (verbally) and fitted at an Authorized Rolex Service Center. The guy who inspected it reminded me of some of the limitations to Rolex servicing and warranty as a result of the aftermarket process it went through, but proceeded to do a bracelet adjustment for me and even compliment me on the look and asked me a few questions about the coloring process.
You can have the DLC/PVD process done through jewelers that also sell DLC/PVD watches. A quick google search will show you what your few options are.
