Toshi, the F4F-3 was at the end of it's use in August 1942, of course relegated to the Marines. The colors were Blue Gray over Light Gray.
Blue Gray never had an ANA number, the Army-Navy Aeronautical system. Light Gray was ANA 602 at that time.
My own preference would be MM Navy Blue Gray, their 205545, and MM Flat Gull Gray, their 1730. Others probably have better suggestions, it's hard to be sure on this one.
For the cowl ring I would use Insignia Red.