I got ambitious (OK, I couldn't decide on a colorway! LOL) and did all three with GAST, WDW and DMC from my stash.
Here is my Union Uniform version, using all GAST: Midnight, Brethren Blue, Pacific Green (yes, green --- doesn't look it, does it?), and Blueberry (0230) for the blues and Oatmeal for the background.
Here is my Confederate Uniform version - I used GAST Brandy and Tarnished Gold and WDW Tin Roof (1174) and Pelican Gray (1302) for the uniform colors and DMC3033 for the background.
Here is my Patriotic Colors version - I used GAST Blueberry (0230), Midnight, Mulberry (02350), Walnut and Flax for the background.