around 2008, a guy from Gampaha painted a really great portrait with a spray-gun at the Kalapola. It was kind of the main attraction that was there, and he was really talented. But after that the Kalapola died due to the organizers' greed, and in the following years some guys painted individually.
Sometimes they appear during the Bookfair at BMICH but recently I didn't see them. That spray paint guy was not to be seen anymore at all.