Does spray paint kill grass

My daghter used regular paint and spary paint in our yard one time and we did'nt find out until after she used it. so my husband was tryin to figure out how to get it to come off the grass. he took our hose and spared it down. Which made it come off a little bit. Then it stormed and that made it come off a whole lot. When he mmowed that was when it came off. It takes a long time though. sorry about your luck