I used my internets and found the Hogue Overmolded Tan stock at Gunkings:
My reseach says that the Tan stocks were only produced for the .920 bull barrel 10-22s. I wanted to put this stock on a Standard barrel -22, so I went back to the interweb but only found a Green Standard one at Midsouth Shooters Supply:
If you want one of these, I suggest you buy now, as it seems Hogue is no longer producing them in Tan/Green. In any case, the Tan was a limited run item, produced as an OEM mod for a custom factory rifle, and once these dry up they might be gone forever. It took me many googles to find the Tan, and the Green Standard barrel appears to be rare too. So, I went ahead and bought a Tan just to have one for a future 10-22 build. Paranoia will destroy ya.
Hogue has two new overmolded stocks due out shortly; these are Tan and Green, but are called the "Ghille" model, with bits of other colors molded in for cammo effect. I think they look gross.