since I don't have to scrub it off the next day, I think it's art -“Digital Graffiti” at Alys Beach is a festival created to celebrate and promote the world’s most talented and innovative digital artists - with the entire town literally serving as their canvas. . .
“We invited artists to project their works onto our town's famous white walls,” said Arnold. “Alys Beach will literally become their blank canvas.”
http://www.digitalgraffiti.info/
