This is what I have complete for my Flames of War mid war American force. This has been a labor of love for me and I'm quite proud of how much I've managed to get done. I still have more to do, such as a battery of six M7 Priests, another armored infantry platoon, and some more M3 Lees.
I used a variety of paints for the olive drab throughout this project. Most of it was done using Tamiya Olive Drab (XF-62) and then highlighted with a mix of XF-62 and XF-60 Dark Yellow. I also used Mr Paint Olive Drab FS34087 (MRP-234) for the Lees and Vallejo Model Color Brown Violet (70.887) for the Shermans. I like the mix of colors since it gives a little variation to the army.