@fiveten Already more progress in a day than I can muster in a week!
@luftwaffe-birdman While I'm no expert, I do build Japanese planes exclusively, so I am keen in learning and sharing all I can about them,
Spiros, for your reference, I'll write down a few notes regarding painting the Zero, which you may or may not use, it's up to you. You have the correct idea about the interior colour of the Zero (green) and the aotake in the non crewed portion of the plane (ie aft of the cockpit). I remember in the 1990's when I thought all Japanese interiors were aotake, but fortunately researchers have corrected that misconception. I don't recall what the Hasegawa instructions say, but the area under the canopy should all be blue-black(and not the interior green).
The back of the propeller is actually a deep mahogany, and it is only the portion of the paddle that is painted. Mr. Color has a specific paint for it, but it is a lacquer (C131). I've attached a photo prepared by Ryan Toews (Zero expert) illustrating how it looks like. The front of the propeller was polished, with two red warning stripes near the tips. The cowl is the same blue-black as the rear decking (Hasegawa has this right, Tamiya not so much).
Now on to the main painting of the plane. As you know, Mitsubishi and Nakajima both built the Zero, and they both had their own version of the Amber grey paint, with Nakajima's being darker. The Mitsubishi version is something akin to RLM02 but a bit darker. google the Legend Flyers A6M3, they have a very well painted Zero. If you want you could darken the paint just a tad (or not).
The control surfaces, because they were fabric, were painted in a more grey colour, something closer to the IJN grey you used on your Nate. Note that the trim tabs were metal, and so if you are so inclined, you can paint them the same colour of the plane. the gear bays and doors will be painted the underside colour if it is a Mitsubishi built plane, and aotake if it's a Nakajima built plane. Since this is Sakai's plane from the beginning of the war, I will assume it is Nakajima built. The legs and arms the move the small gear doors are semigloss black. If I recall, anything that is steel would be painted semi gloss black (tail hook included).
There are many more intricacies that I could list (many that I'm not too familiar with), especially when it comes small details between Mitsubishi and Nakajima. One of the best builds that I have seen, in terms of details and accuracy, is this:
https://forum.largescaleplanes.com/index.php?/topic/82335-a6m2b-zero-shades-of-grey/
Note that the plane being built is a Nakajima Zero (note the white ring around the fuselage hinomaru on an uncamouflaged plane, something that was done to distinguish Nakajima Zeros from Mitsubishi ones), and so some details will be different than yours.
Anyways, hope you find this useful, even if you decide not to use any of it.
Happy building
3 attached images. Click to enlarge.