IJN nakajima icockpit color- Oh MY !!

Hi folks, i have been reading about Nakajima interior green and what was the actual color. So far, i have found  two mixes using Tamiya paints :(1) 3 parts-(XF62  OLIVE DRAB) / 1 part (XF4 YELLOW GREEN).....(2)   92% (X2 WHITE ),  3% (X1 BLACK), 3% (X5 GREEN), 2%(X8 LEMON YELLOW).  Another article wrote.. Nakajima IJN COCKPIT GREEN- TAMIYA (XF-11  GREEN0 and lighten it a little .This give you 3 different shades of green. My question is simply this--is there an actual IJN Nakajima cockpit color, OR is it like above..pick something out you like and go with it. I know there are experts out there that can shed some light on this aggravating subject. All feedback will be GREATLY appreciated! doc bailey