Keith-a
From my references, except for trainers, the navy painted its aircraft w/flats until it changed to the tri color scheme (sea blue/intermediate blue/white). The TO's called for "non-specular" (flat) paints except for the tops of the wings, horizontal stabilizors and elevators, calling for semi-gloss paint in those locations. Aircraft operating in the Atlantic were painted in in a combination of whites and greys. (Gloss white unders, flat white sides and flat grey uppers). In late 1944 the scheme started to change to Gloss sea blue over all.
You will need to do some research on the particular aircraft you want to build as each time the schemes changed you would end up with a unit operating both paint schemes at the same time (Replacement aircraft in new scheme and old aircraft in the old scheme). This was true for a year or two after the war ended (Someplace out there, there is a great color photo of 3 PBY-5s on a ramp somewhere on the west coast in 1946 or 47. One is overall silver, one is tri-color and one is overall gloss blue. And they all belong to the same unit).