Because there is more to living history than just the Civil War
What a fantastic photo, and a great idea. It seems like a dark colour, so blue would do as well as any other. They look like such hard workers.
Sounds like your kind of project. Be sure to share the results as I know that it will be a beauty. Many years ago, I remember helping some of the staff at Marshall Gold Discovery SHP understand the Lady's bonnet ties and the thrown-back veil. There are a lot of details in the image worth studying. Take care