I've been curious and watching out for X-touch overlays for a while now, and have not seen anyone (Behringer or 3rd party) offer anything anywhere. I did try, but I wasn't thrilled with the homemade paper cutout I made from the (excellent) SONAR overlay graphics posted by others. Since the material/cutout seems to be the trickiest part for anyone without sign-making equipment (most everyone), I think the sample above looks great even as a base for home customization. I agree, fully labeled templates sound great as well, but then you are committing to additional graphic decisions and variables. I'm just saying people might also pay for the blanks.
If craigwojo offered up blank ones for sale at a low enough price, I'd pay at least a few bucks a piece for blank vinyl just to finish with a label maker for different apps/scenarios. (Black vinyl might look even better with a white text on black label maker.)
I say put 'em up on ebay and see who bites. Anyone looking for "X-touch" is bound to see the offer. Seems like a low risk venture and possibly untapped demand. Good luck!