hey … there are question about shader animation, It looks very nice effect
.the linkadd http://www.narkii.com/uploads/3dwork/c3d_9/8647_20120724143129/index.html
question how to do this effect that material color change(gradual change)
I believe this person has used a projector.
This may of been made on unity free because with unity pro you can have real-time shadows.