IMO it looks pretty good . If you check war time color photos ( Life Magazine ) you'll find that there were about 4 shades of Olive Drab , from a light Olive Green to dark Olive Brown ( almost dull black ) , this was because the ratio of the various color pigments changed as they became needed else where in war effort . Not to mention coats of dust , dirt , mud and fuel spills affected the color of the tank . Just find one you like and use it on all your US armor , as you progress in the hobby you can add shading and washes and crew stowage to make every vehicle unique if you so wish
