Profa,
Here is the "formula" I came up with for the Verde: Model Master Dark Green FS34079 with a few drops of black to darken it. This may not be needed on a 1/72 model but I darkened mine to approximately FS34083.
Marrone: Seven parts MM Military Brown FS30117, three parts Insignia Red FS31136. Perhaps 6.5 to 3.5 or so, it just depends.
Scott