Idea Development

What I'm doing?
Urban Graffiti Interactive wall

Vandalism may be perpetrated whenever the opportunity exists. It often occurs on school property after hours, in public parks after dark and on vacant premises. Vandals usually do their mischief when they think that no one will see them and/or when no one is likely to stop them. It releases toxic chemicals into the environment when sprayed. This includes aerosol which leads to global warming, by prevent heat from exiting the earth's atmosphere. It is also aesthetically unpleasing to a lot of people.
If somehow create graffiti that is does not have these terrible chemicals and used as positive art than it would be good, but how?

So my idea is to create an interactive graffiti wall.

Example?
Digital Graffiti Wall for Converse

My idea is to combine the function of these 2 interactive art pieces,

-Basically, this is an installation are which detect audience movement to growing the graffiti template, and then audience can play coloring on the interactive wall by using the spray can. 

-The technical part apply that using a projector, wii remote and PC.

-About the software part, I am thinking to use After effect and flash to do the growing animation template.

-I will focus on the graphic part which is my favor. The graphic on screen can be various type of graffiti templates.

The aim and objectives of this installation are:

- To reduce and prevent Vandalism

- to experience the fun of graffiti but does not cause any crime
-to protect the environment