Jules did mine in BROWN zinc chromate in 2011.

Google 'brown chromate" and you will get plenty of hits. "Chromate coatings vary in color from bright yellows to dark browns", https://www.swplating.com/platings/chromate-conversion/

Photo shows my hood latch in factory brown chromate before Jules re-did it with new brown chromate.

15-1 Hood.hood latch1.JPG
If you don't see two dolphins, you need a vacation.