Italian camo colors are called "mimetico". They don't have a numbering system, just go by name.
White Ensign made the gold standard paint line in mimetico, as far as I'm concerned. All matched from original chips or factory data.
Hard to find now , but here's what I know and thanks to Jack for the name.
The paint is now sold by Sovereign.
https://www.sovereignhobbies.co.uk/collections/esercito-italiano-italian-army
IMO if you want to get it right, buy these.
They paint like Humbrol enamels. Easy to use, easy to thin.
Look at their other stuff too. Their RA stuff is great, and if you get into RA the camo schemes are endless.