This exhibit allows visitors to leave their mark on a virtual brick wall. Visitors pick the color of their 'paint' by directing the spray can at the bar of color across the bottom of the wall. Visitors draw on the wall by pressing the button on the spray can and moving the can, just like a real spray can. The only difference is, this spray can draws with light instead of paint! Visitors can save their work and view it at a separate kiosk or on the internet. This exhibit was designed in collaboration with Liberty Science Center.