Duracoat is a two part paint that cures hard. It's meant for firearms and adheres to metal and plastic. They do sell a version that comes with a compressed air can to apply it. I personally just used my airbrush.
As far as taking it apart I was able to do it without looking anything up online. I used a heat gun to remove the bottom trim piece. One note is the ribbon cables have a release clip unlike the phantom cables.
The bottom ultrasonic sensor/ camera should cable should be released from the frame not the sensor. It's easy enough to get the sensor off but near impossible to plug back in that way.