Water Light Graffiti

I was looking around on the web and found this cool video. It says its graffiti,but there wasn't really any  tags or pieces. Anyway its a setup of lights that seem to be activated when applied with water or something to that affect. It's a pretty cool concept and anyone can use it as you will see in the video. Found it on flowingdata.com but check http://vimeo.com/47095462# for the vid.