Italian Grigio verde is an elusive colour and there is no correct paint available on the market, to my knowledge. It is definitely more towards the grey side of things, but still with a definite green tinge. My take (I am working on a project for a customer right now) is a mix of about 25% 70.886 Grey Green and 75% 70.830 Fieldgrey (both VMC) with a very thin Umber shade wash. Fieldgrey for the puttees and webbing, Canvas for the breadbag and water bottle, German Camo Dark Green for the helmet.