i doubt they will repaint. i'll admit i was surprised it wasn't painted either but then i thought, well it's been 4 years and no one (including me) noticed it, so do i really care. the door is only open for a few seconds each time and you aren't usually standing on that side as you pull it open.
i did compare it to our mercedes GL in steel grey paint, and the jambs are painted to match the body. so i completely understand you are annoyed, but i don't think there's much you can do about it unfortunately.