Light Graffiti: The LED Spraypaint CanJuxtapoz // Monday, 10 Aug 2009
"Graffiti artists can conserve their own gesture they have with an aerosol spray. It is possible to change the color and the brightness of the led to change the graffiti's styles. If the light doesn't have enough battery, the user must shake it to have energy again."
The LED light can change colors and brightness on the fly and while it's powered by an internal battery, it can be charged by shaking of the can. Talk about green art.