He got started by building a Paisley for Brad Paisley. Brad’s “Old Pink” is an original 1968 Fender Pink Paisley. You can see it in the video he did for Fender here:
Fender decided to make a “hippie” version of their guitars and basses during the late 60s. It was, after all, the era of flower power.
TDPRI has a good summary on Paisley Teles. The Fender Custom Shop has put out a few Masterbuilt Paisleys over the years. The last one I have seen was this 2012 Custom Shop Masterbuilt Stratocaster — a relic reissue of a 1969 Gold and Pink Paisley. Some great tones from Gregor Hilden:
I have a Fender Select Tele but there are a few issues with the build. If I were to look at a new one, Bill would be the first guy I would contact. He is the one that can create an outstanding Paisley in a wide range of colours. I like the vintage pink one though. Very cool.