Outstanding stuff,civilwarincolor! hats off.I was told that there is a chart that some guys use,that roughly gives you the possible corresponding colors for different shades of gray.Even so,your way seems more beneficial,as the research is ALWAYS good to do.
As a painter,when I feel like messin around with CW subjects,I know that I have to research as well,rather than just guess,hehe.I have had my guess-work come back and bite me in the donkey,before