I'm guessing you're modifying another skin? I find it easier to create a completely blank template with all the base layers (panel lines, details, etc) and no "paint" (so make it a uniform gray) and weathering, as these are going to vary plane by plane. Makes it easier to check your surface details when you don't have the paint in the way.
Incidentally, depending on the coloration you're using your upper fuselage color MAY come out greenish and that's absolutely fine. The Non-Specular Sea Blue used on the tricolor birds had a slightly greenish tint to it (modern paint jobs on restored birds where the aircraft are a very plain dark blue seriously irk me). The semi-gloss used on the overall Dark Sea Blue aircraft later in the war was VERY dark. Looks like you've got a pretty good color match for a tricolor bird. If she's supposed to be overall DSB you might want to darken it up some. There's also websites out there that give direct RGB values for the actual historic paints, and that can be a GREAT resource if you feel your colors are off.
Also, when you get around to weathering her keep in mind that blue paints tended to fade towards the gray end of the spectrum, so you would actually want to nudge things slightly in that direction. With this being a CV bird you don't need to worry about it as much as you would a land-based one, (compare my two land-based VMF-214 Corsairs to the VMF-321 bird, which operated off USS Kwajalein) but you might want to fade the upper surfaces (wing tops, top of the nose and cowl, and spine) ever so slightly to add some gray to it, and blend it into the sides of the fuselage which would receive less direct sunlight and have less fading. Under surfaces you can almost leave at their pure values.
