for one of my school's prom fundraisers, we want to sell seniors a parking space for the year and allow them to personalize it by painting the asphalt. however, my principal totally won't go for it if we dont know how to get the paint off at the end of the year. do you have to use special paint? will the paint just wear off? do you use some kind of paint-remover? do you power-wash it off?? somebody MUST know how to do this.