Bish - thx for mentioning that osprey book, looks pretty handy, and it's author I'm very familiar with for his boxtop paintings for Alpine figures.
Individual's call about investing in all those extra paint bottles. I think getting the pattern shapes (and in scale) will be more important than getting the right hue. The colours really depend on what you use for reference. Also, these patterns were printed on as many as 6 different types of material, which can result in a slightly different colours:
More literature here:
http://www.atthefrontshop.com/SearchResults.asp?Cat=423
-----------------------------------------------------------
What I did was load an image of a tunic to this site
http://scalemodeldb.com/paint
Then choose a pixel that gives a close approximate paint matches, and take it from there.
-------------------------------------------------------------
The earliest patterns were hand screened, the patterns being about 70 inches long. By 1940-41, this had switched to roller printed to save on production time. The patterns here would be about 18 inches in length, so it would be easy to see the repeat of the the pattern on finished garments.
Barret, that is the first I've heard of that story, though the initial link I posted does mention that caps and helmet covers were not produced in the dot 44 pattern, so these were made out in the field. It's not clear though if that means soldiers painted the material themselves, or just cut up existing material.
regards,
Jack