Yep, that would be clearcoat on the propane bottle cover, too. Actually, it's just about everywhere (including all the exterior lights, rubber trim - you name it. My cover appears to have been painted recently, and therefore had no clearcoat on it as far as I could tell.
A company called Vomela actually manufactured the striping on my coach - there was a small amount on a roll in it when purchased (even had an Airstream part number inside the cardboard tube), however when I contacted them (Vomela) they weren't much help and directed me to Airstream.
I found a place online called Stripeman.com
that has a very good selection of stripe styles and colors. Ordered a sample book from them for $3 so that I can best match up the choices, and they come in widths up to 6" I believe.
I started removing the striping using a $10 heat gun from Harbor Freight. When it died after about 20 minutes of use (typical), I moved to a combination of Aircraft Stripper (to remove clearcoat on stripes, as well as the stripes themselves) and an adhesive remover put out by Crown (dark gray can with orange letters - can get it at Lowe's) to soften the remaining goo. When the goo was good and soft, I made a scraping wedge out of a piece of 1x4 wood, about 5" long which proved effective at removing the goo in big glops. Finally, I used a piece of fleece cut from a remnant bought at a fabric store, soaked with Xylene which cleaned up the remaining residue nicely. Definitely recommend doing this in a well ventilated area (like outside with a nice breeze) and using appropriate chemical resistant gloves. It's kind of a messy job, but it works. The red painted stripe took multiple applications of stripper to get it to release from the aluminum - tough stuff! All the glop that falls to the concrete was allowed to dry, then I was able to sweep it up and into the trash. All of this left a residue free surface to do with whatever I choose, which in my case will be re-striping. Right now though, it has no stripes at all. No "ghosting" either. Though it looks pretty cool without stripes, I'm going to go ahead and restore them to keep with the style of the time.