There was a guy just like this in Austin for about 7 or 8 years (possibly longer) that did it outside a tattoo shop on 6th street. It was novel the first time I saw it, but then it became a real pain in the ass every time I would take a friend to 6th to go drinking. We'd have to sit there for 12-15 minutes watching some space painting come together with the rest of the tourists... gak.