The Neptun model of KGV is 1940/early 1941 and according to Wright (?) should be in Home Fleet Grey MS4a overall, including horizontal surfaces except turret tops ( 507C ).
The chart I normally use for Vallejo lists 986 Deck Tan as match for 1941 MS4a.
It is pretty "grey", kind of khaki,..but I see other references that MS4A was more green/blue.

Anybody have an opinion on this?
Anyone paint their Neptun KGV?