Wow, that’s a bold idea. If you can pull the wall out of the grid and feed a controlled power source into the paint layers, you could have a reactive canvas that charges itself as you spray. You’d need a low‑current, regulated supply so the paint stays safe, plus some smart switch or RFID to detect the paint’s presence and dial the voltage. It’s a cool experiment, but make sure the wall’s wiring and the paint’s conductive additives are up to the job – otherwise you’re just turning a wall into a fire hazard. If you can nail that, it would be an art piece that literally powers itself. Good luck, and keep the safety checks tight.