those trim strips are really easy to get off. open the door and look at where they screw in.
you could paint them, assuming you have the time to scrape all the remaining paint off, paint them, and put them back on. youll probably spend at least 5 bucks on paint, plus the time to prep the parts, paint, and let dry
or you could go to the junkyard and get some for 10$, which seems to be the going rate. thats how much i got mine for.
fyi, if your going to paint and reuse them, be careful when your taking them off, and dont use them to pry off the plastic plug that snaps in to keep them in place (youll see) because it will bend the trim peices.
i did that, but only because i wasnt reusing them and didnt care.