My mom's Kenmore that was a couple of years older than yours also had that same problem with Spray-n-Wash removing the paint from the control panel. I'm surprised to see that your models had the same thing happen as I figured they had resolved that issue with the advent of the black panels. In spite of the missing paint, that Kemore was by far the best machine my mom ever owned.
Nice collection, the Maytag in particular!