JB, the plastic inside the fridge would do well with Krylon Fusion paint. It adheres really well to plastic without much more modification that cleaning the gunk off the plastic. I painted a plastic Power Wheels Jeep a year or so ago, and it has been sitting out in the heat and sun since. The only spots the paint isn't doing well are the parts I didn't clean well enough.
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.