Thanks - the base RGB value is 179-141-76. I started with the yellow of the default P-38J skin, which is also from the 20th FG, and tweaked the saturation and brightness to account for the different Power and Spec values on a bare metal skin.
There must also be a flyable computer available for Nefarious to do FSO. So he doesn't keep talking about it for eight and a half hours on Friday night!