abufletcher

Here's the color mix I ended up using. The swatch in the middle is the unaltered Nelson's Olive Drab, which is too green for my tastes. On the right is the more brownish hue that I went with. The photo shows how much of of each of the acrylic I mixed with the 1/2 pint of the Olive Drag.

By the way, later in the way, the British also formulated a PC12 which was definitely browner...almost reddish.