Hello Zeroenna,
Alologies for the late reply, but I haven't been very much online lately.
From what I see on pics at for example, Airliners Net, lots of Russian choppers have this very light shade of green as cockpit colour. You also see it a lot inside (non russian) combat vehicles (tanks, armoured personnel carriers etc).
I don't know the colour number, but I do know that Humbrol has it. If I remember correctly, the name of the colour is duck egg-green.
Hope this is of any help, good luck
Gertjan