Here's the 1/48th DML Fokker triplane modified using Rosemont's kit #800 Fokker F.1 conversion (new resin curved tail, prototype style cowling, early ailerons and decals for F.1 101/17, Manfred von Richthofen's 102/17 and Werner Voss' famous 103/17). I was probably 13 years old when Revell released the 1/28 scale triplane in Voss' colors. I remember that the box art was a build-up kit that looked great in the light blue with green streaks ('too bad' I thought how wrong they were with the blue doping overall - now I know I was mistaken....the first three prototypes were (maybe?) doped over all turquoise). Being a teenager I loved the idea a teenager/ace had flown the real aircraft.
As to my opinion-choice of green cowling and wheen covers vs. the discussed yellow theory....I simply like the contrast of the white face on the olive green cowling and believe Voss would have too. 56 Squadron's debriefing after the famous dogfight of mentions the airframe in shades of green, blue and grey and (my opinion) if the cowling was yellow I believe their combat report or G.72 report would have mentioned this fact since they call out the other colors. Enough said on that.....
I finished the model using Misterkit's Fokker Torquoise and Polly Scale German RLM 80 Olive Green for the cowling, wheel covers and streaking. Rigging was .005 ceramic wire; National markings came from the DML Kempf kit. kit.