Chris D., for a model to resemble the ships in the 1945 photo available at the link below, on the upperworks use Colourcoats paint product ID US28, #27 Neutral Haze Gray (USA).
USN #27 Neutral Haze Gray was blended from lampblack and white paint. It matches neither earlier USN 5-H haze gray nor postwar haze gray nor aviation gull grays.
The Snyder-Short color chip labeled #27 Neutral Haze Gray (1945) is not that color and is instead USN postwar haze gray, a lighter and blue-tinted color that indeed resembles haze at sea.
The Development of Naval Camouflage 1914 – 1945 Part V: United States >
BuShips letter subject Camouflage Instructions - Carriers, Cruisers, Destroyers, Destroyer Escorts, Assigned to the Pacific Fleet (yes, I know that you are modeling a battleship) >