According to this website:

http://www.paint4models.com/#

Model Master SAC Bomber Green matches, or at least is close to, the WW2 Italian Gray Green of Italian armor. I haven't been able to find any color pictures of Italian armor in that color, but I assume my references are correct?

The colors I used for my Gilera LTE500 and M13/40 kit-bash are described on the bottom of this post:

Armorama::Model Victoria "Gilera LTE500"

After my research, I decided that the color was in the range of a slightly yellower and dusty shade of Field Gray.

At any rate, you can see through the links above and in that thread what I did, adjusting for scale.

HTH,

Hey, thanks! And the Italian Gray Green is quite like the Model Master SAC Green, comparing your motorcycle to my canvas top painted in that color. For the record, I'm building an M13-40 tank as used in the Balkans. Which has no machine gun on the turret roof.