There are certainly those who have a strong objection to seeing color on grey buildings. It somehow throws them off guard when they meet with an unexpected face on a wall or a written message that has a strong claim on the passerby's thought of the day. I have often met with people who complain about museum prices, about not having enough time to visit an art gallery, and all the while passing by some new idea, outside their own building. Of course, they have objections as to the art form of the graffiti techique, but I think one can not but change their mind if they just look a little closer.
