Seeing as how my camera lens broke a few months ago I've occasionally been checking here and google for a new lens, much like that dummy lens, but I wanted an OEM lens of the exact same size. I would have loved those red/black covers that come with the lens, but alas, they are no longer available.
However, I did a quick google search today and found this site:
HTC Droid Incredible Replacement Repair Parts
which seems to have the original camera lens bezel as well as random other parts to rebuild the incredible like the speakers and screen.
The only downside to ordering from that site for the camera bezel is they required you to order two, so $30 + $8.95 shipping
Unfortunately they do seem to be the only market for these parts....