NRA, as to the color difference, I had a hole that was punched in the nose of my 1121 and the shop painted the repaired area. (generator repair shop did that damage 2 weeks after I bought the camper) They matched the color almost perfectly and it has been about 7 years now and it still looks great. I wish I knew what kind of paint it was, but they did a great job. Maybe you can find a paint shop that can make a recommendation.
The shop that did my repair that time was in St Augustine, FL. They did a great job on that repair, but not so hot doing some basic sealing.
Dale