According to references at j-aircraft.com cited above, until recently, early Zeros were incorrectly described as being painted in overall Pale Gray. It has now been determined that the color was actually Gray-Green, a close match to FS 16350. According to IPMS Toronto, the cowling was Blue-Black-Gray FS 35042, used on Mitsubishi built aircraft only, that quickly faded to dark gray.
The blue-green-clear was called Aotake, which means blue bamboo color. This was a clear blue-green lacquer that was applied to the Zero wheel wells, wheel covers, and most other interior areas, except the cockpit, to protect the aluminum from the weather.
Most model paint manufacturers offer this as Metalic Blue-Green or Interior Green Metalic.
As referenced in "Japanese Aircraft Interiors 1940-1945", by Robert C. Mikesh, the Zero cockpit interior, including the instrument panel, was a Mitsubishi green listed only as A/N 34 (no FS number given). My Mk 1 eyeball tells me that the closest match is FS 34259. This color is, or was, available from AeroMaster as #1096 Mitsub. Int. Green.
I hope this is of some help and not too confusing.
![Confused [%-)]](/FSM/CS/emoticons/icon_smile_perplexed.gif)
Pete