First step in the process--after "freshening" the oxidized aluminum surface with Scotch-Brite abrasive pad and wiping well with paint thinner to remove residual crud, grease and oils, I primed and painted the enclosure. The photo below shows the main body of the enclosure seconds after it was sprayed with yellow Krylon enamel, along with the back cover of the enclosure with the flat brown primer. They're both yellow now (brighter/darker than the photo makes the color appear), and will get two more coats this afternoon....