69 911 Correct Finish For inside Bumpers

[CobraR1339]

I have seen a few pics, but nothing original.

Trying to re-do in the correct finish, if that matters. But since it's ground up , I suppose I might as well do it factory ?

The car is Irish Green, the inside of the front bumper is just primer grey with some green drift at the edges, primer runs, etc. Believed to be 100% original, never been changed as far as I know. Does this sound right?

The rear bumpers are the same way, but the drift of green is far more pronounced in spots.

Recommendations for the correct finish please !!...paint is pretty much done except for the inside of the bumpers. Obviously the primer and a drift is easy to re-create.

Does this matter on a 69 911E ? Tempted to just make them glossy and pretty.
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Other virgin 69 notes for forum archives reference:

69 appears to be the last year for the black engine bay and frunk.

The under body is a combo of grey, black and green. Looks like they had grey undercoat, painted over it to black out external visible areas, but after the car was painted.

So a green drift under the car about 1/2 way , but pretty much just on the raised edges of the tub facing the outside of the car. The center is almost 95% grey.

In the engine bay, it appears what was painted black over the grey under coat, drifted to the left and right of the rear control arms. The center tube between the control arms mounts is grey with minor black drift, but left and right of them has big black blotches of paint.

Never a re-paint, rust free original.