Glass-filled nylon, nylon is not UV stable and can't really be made so although carbon-black does help. The outer "skin" of the plastic burns off, exposing the glass-fibers beneath, and there's no way to blacken those fibers effectively unless you re-coat.

I agree with Cal and outofspec.

Another alternative is to find someone who is parting a '90-up car with the later handles with the chrome strips, probably 10minutes/door to replace them on the 124 but the lock portion will take a little more time to swap cylinders.

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Gone to the dark side

- Jeff