I managed to get started on my A5M3 Zero today. I found a research paper that concluded the correct colors for the Zero's after all these years, it appears the grey green color is a myth and they were all either dark green camo or a medium tan color. I found the paper here.. http://modelingmadness.com/earlya6mcolors.htm It is a fantastic read and wonderful resource with color photos of the real deal so there are no more questions or arguments about what color they were.
In the light of this new information I will be honoring that color with an cocktail mix of my own to get it as close as I can. Fortunately the author gave Tamiya codes and ratios so I should be good. I also found that the "metallic blue" the Japanese used is not the same color Tamiya calls for and most people use. I mixed my own today using the reference photo and I am pleased with the result.
In this shot you can see my interior color metallic blue is quite a bit darker than you may have seen before. This, again, is due to the reference panel I listed earlier. Open that link to see the colors. The cockpit was painted similar to an interior green but I went with a black base with a cockpit green over that. I will detail it out and wash it with Flory wash and that will darken the whole thing up close to the photo of the Zero's cockpit I found.
I painted the engine Alclad Aluminum and I will be adding push rods and ignition harness as well to detail it out. More to come. Happy new year!!!