Having owned 4 orig paint '69 B Bodies over the years I was sure I'd have photos showing these plugs closest to the door hinges But, all I could find was the bronze '69 GTX showing the outer door/latch side. But that lower round plug is black against the bronze paint. The factory made no effort to put a body colored plug there. Then again, upper door frames were black on this black interior car.

Couldn't find close up photos of the inner door jamb areas. I'd guess that the factory in 1969 put in black plugs on many cars, regardless of UDF or body color. I could be very wrong though. The plugs don't show, so what factory assembler would really care? The door bumpers are all black. And you have black drain plugs in the trunk floors as well. Black goes with everything. They did make the effort to match the door lock lift/push knobs to the UDF paint color.