I have Olive Drab from about a dozen different sources, bought before I read that article linked above, but after I bought some chip sets to match OD to, including various ANA and FS sets
after reading that article, and buying some Acrylic paints,,,,,,I ran across this item
www.astromodel.it/.../olive-drab-colours.html
click on the photo with the smaller picture of the tank on it, you can then see a large photo
I ordered some of those options also,,,,then saw another company's primer
after that, I decided to just go with the easy route, lol
click the colored rectangles on the right of this page
www.acrylicosvallejo.com/.../22
number 608 is a US Olive Drab polyurethane primer,,,,that is the color I am going to use from now on for Aircraft bombs and OD Trucks,,,,with some of the other Olive Drabs scattered around for color variations and fading etc
I believe that OD is such a subjective color that you can pick just about any paint or primer by any company and use it, because almost every model paint falls somewhere between fresh and faded OD,,,,,,,,and as my LHS owner is happy to point out,,,,,,"really, really weather beaten Olive Drab" makes the Tracked Recovery Vehicle used as our National Guard gate guard look almost like it was painted with Red Brown ship primer (the paint is only 3 years old)
Rex