Thanks to everyone,
And especially "Mors" I went and had a look at your link. Very interesting, and there was some 'French Colonial Khaki' in some of the prints. It didn't have enough of the yellow/green in it to make it British Khaki Drill, but was more in the line of a light tan. However, just like the prints from H. Large, one now wonders if this tan was the real color, or just a sort of 'representational color' which would be considered 'good enough' by a French print maker.
Along those lines, this past summer I visited a local museum with a travelling exhibition of paintings by David. The center piece was his 'Napoleon Crossing the Alps.' The flyer had a very interesting bit explaining why everyone thinks that the lining of Napoleon's cape was red, instead of the sort of yellow/orange in the actual painting. Seems that the very first set of prints made of the painting somehow used red instead of the more difficult/accurate color. And since then subsequent prints, illustrations, etc. have been based upon previous prints, and not the actual painting.
Sort of a high art version of the 'what color khaki' problem that I'm haveing.
Thanks,
MW