No, not watercolor transfers... color water transfers. (Say that, ten times fast.)
I made a pilgrimage to a Staples Office Supply store today - a short, hour-long drive (hey, this is Maine!) - and I copied five sheets of patterns I made on my computer. Got home and tested them with the water transfer technique on some scrap clay.... and the winner is.... Staples Office Supply!!
Granted, the color of the test on polymer clay was washed out, compared to the original colors. But Doc Sarah, "PAPCG Guild Cheerleader & Web Tinkerer", and regular visitor of Polymer Clay Central, says she really ramps up the color saturation of her images when she prints out the originals to help keep the transferred images bright and colorful. I shall have to try that.
Now, about the actually patterns I've made... Most of them are all my design. A few are adapted images from a wealth of sources (with permission, or non-copyrighted), and are also available as silkscreens. But all of them seem to look a lot like fabric patterns. Funny, that. I really do have a thing for fabric. Sort of a Love from afar. A wanna-be quilter.