Eric told me today that there are 6 or 7 silver finish frames available. These are new production frames finished by Smith & Wesson -- just like the black on the Stealth models.
You can see a photo of one here (courtesy of Stellar Rigs):
These frames have a look very similar to the early model silver annodized frames that were discontinued.
If you are are interested in a silver frame R-9 (which can be mated to either a standard stainless slide or a Stealth slide), call Maria at the factory. Obviously, supplies are limited. I believe the price of an all silver model will be the same as that of the Two-Tone, or $1,150 retail.