Vallejo has it as light grey green 71044 closest non rlm was sac bomber green, but I have also seen it as maybe neutral grey or even dark ghost grey on pictures of others models here.
I have the academy 1/72 me109 E3/4 I have one painted up in the sumer of 39 commo but I also would like to do one in the summer 1940 scheem which says rlm71 dark green rlm02 grey green and rlm65 light blue.
Should I just go with the Vallejo color and not worry if it's not the right shade of grey.