What is the best IDF m60a1 colour for vallejo paints

I would greatly appreciate some help.

Preferably model air.

I dont think Vallejo do one you would need to mix your own,IDF colour is a bit of a mine field because it changes over the years what time zone is your M60 in,if its the Lebanon then you could use Humbrol 84 or a company called White ensign they do sinai grey which would be ok for that time zone.if you want more up to date colour you will have to mix it, check out IDF modelling they have some mix recipes or IDF in scale they have lots of info. good luck.