For that inside of the deck lid you could (cheap way) sand and bedline it. OR (what I would consider) FLOX it. It would look sweet, whatever color you may want. Naturally, sand it, smooth it out 1st. But yeah....
The plans extend to the trunk as well. Clean it sand it (kind of) repaint it and cover it with carpet. When I finally learn to weld the trunk will look nicer than original but still functional.
I was thinking of flocking it, also, then I saw your comment. Quick story, Back in the 70's, a custom shop had closed and an auction was held to get rid of everything inside. Of course, all the shop equipment went for crazy money because of the famousness of the shop. Then they got to the section where he did the flocking (flocking had gone out of fashion several years before this). All kinds of specific equipment, the electrical stuff, heat lamps, and the inventory of cans of flocking covered a 30foot wall, floor to ceiling. No one wanted it because it was one bid gets all of it in one lot. $60 bought everything in that room.