I assume that is around the line of "Kommando Khaki" for armor colour and a "Beastal Brown" for the body.
So something like this maybe?
Then tank camo like this?
This is fairly easy to do: Get lots of silly putty.
Prime the tank and let dry.
Spray the whole tank brown and let dry overnight.
Put silly putty on the tank where you want to keep the brown.
Spray on the Khaki.
Peel off the silly putty and viola!