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All the gold with the exception of the buttons and silver dolphin pin are painted in non-metallic metallics manner. I used a bit more burnt umber for the base color for the trim along the brim of the hat and for the oak leaves to show a contrast between the gilded thread of those items and the emblems on his chest and top of the hat.
I decided to go with a very pale flesh tone since I thought it would represent life under the water a bit more than my traditional rudy tone. The only thing I did differently with my flesh mix was to add a bit more titanium white than cadmium yellow to the highlight mixture and grey out the basic flesh tone a bit more than usual.
The binoculars are painted in oils and at the wear points, dabbed some grey tones for contrast.