Propper color for WWII 3" anti tank gun

What would be the right color to paint a1942 WWII 3" anti tank gun? I am not familiar with the WWII OD colors yet..

dont know if this helps but you might be able to call them and ask them?? looks like 383 green so it might not be right

http://www.lib.ndsu.nodak.edu/archives/monuments/90mm/90mm.html

the correct color would be OD 319. There are folks who talk about early and late WWII colors - BUT the manufacturing records for Ford, Mack and Willys all say that their products were the same color number beginning to end.

Remember, the five-digit FS color system didn't exist during WWII - nor did the four-digit TT-C-595 system.

HTH,
DD