I recently finished an STRV122 a marriage between the Tamiya Leo 2 and the Hobby Boss kit and was having difficulty with the colours. I ended up using for the dark green Tamyia XF 26 Deep Green but if you want to make it a bit darker add some Tam XF 11, light green Humbrol 131 2mls and Xrtacolour willow green .5ml but I am at present buliding a Finnish T 72 and BMP 2 and found that the light green I mixed is very close to Model Masters 1713, the brown Tamiya XF 68 NATO Brown and the black Vallejo Black-Grey mixed with black at about 70/30 ratio. Sitting in my pile of to do kits is a 103C and I will be painting it with the above colours.