These are just offcuts from a signmakers, its called Avery Supreme wrapping vinyl. I think it is around £25 per metre (1.5 metres wide. It has to be proper wrap, as the wet application stuff doesn't stretch enough and won't stay stuck around tight corners. I have to admit I found it pretty challenging.

I'm actually considering getting a couple of aerosols of plasti-dip, and having a test with that to see how It goes. This stuff really looks the dogs danglies!
You just mask off windows and stuff roughly, allowing it to get over the window seals and onto the glass a bit, splatter the living shit out of it, over the fuckin lights and everything, and somehow it just magically dries flat. Then once it has dried, you peel it off all the bits you don't want covered. They're spraying it like monkeys with what essentially looks like a garden fence creosote gun, and it actually looks pretty good once its done. When you decide you want to go back to the original paint, it peels off.... I shit you not 😂😂😂

https://youtu.be/rNY9Dx617N8

I think it is worth a go just to peel it back off, looks so satisfying. I think some sort of a satin black with one of the pearl tints would look pretty cool, and sticking with a similar colour would reduce how obvious the lines are where the plastidip meets the paint in the door shuts.