Thanks everyone for the nice comments.
Frank, it's PC10. I used the Wingnut instructions for PC10 as a guide, but added some white to lighten it up. I also used a slightly different mix with more gloss for the engine area and cockpit area since these were not fabric. The fabric was 25/25/50 mix of XF-2 flat white/XF-10 flat brown/XF-62 olive drab. It does take on different colors depending on the light and the angle of the light, sometimes more brown and other times more olive drab.