I have painted door panels on other cars and I have never been happy. I have scuffed, cleaned, primed, tried both duplicolor and sem and never had durable results. Anything in a can will not hold up! If you touch it sunlight and hand oils will break it down. It will crack, forget about having pets in the car. I would recommend just changing the inserts the color you want. If you insist on painting either go to a body shop or use a plastic primer then 2 component exterior finish like single stage urethane with a flex additive in it. Also if your interior was Coated from the dealership that will be extra difficult to remove.