What surprises most people is that almost all the coverings are clear plastic. The color actually is in the heat sensitive adhesive.

Covering is basically just two parts. There is the clear top layer. And there is a layer of adhesive that has the color mixed into it.

Some of the Chinese ARFs are demonstrating this to unlucky purchasers as we speak. It seems a fair number of models recently have had the trim layers come apart. The clear plastic isn't sticking to the adhesive that's supposed to hold it on the airplane. But the adhesive is sticking to the airplane. And that is creating some nasty messes. A buddy at the field tried to paint the adhesive when it wouldn't come off. That was just as bad.