Arm Rest Paint?
I did everything except the headliner and carpet with SEM vinyl dye to change the blue interior to black. I even change a seat from white to balck with the SEM material. The armrest pads, door panels, dash pad have been holding up for the past 7 years and 40k miles.
You have to clean clean clean, I used an ammonia based cleaner. After which i used the SEM vinyl or plastic prep, appropriate before applying the spray color.
NOTE: if you get any fish eyeing then you haven't cleaned enough and you need to get the dye off before it drys and clean some more.