Confederates had the grey clothing.
I think the union was considered blue jackets and Yankees while the confederate was called Grey jackets(confederates not entire sure) Yanks and the Rebs, or "Billy Yank" and "Johnny Reb". == == (Answer 1) I think it was Blue Coats and Gray Coats
Confederate uniforms were grey. The Union Army wore dark blue.
The men on the confederate army wre gray clothes, and the union wore blue
The confederate soldiers (of the new Confederacy of the United States) wore grey uniforms versus the union soldiers who wore blue uniforms.
The Confederate States of America were the southern states (Grey). States in the North, as well as California, were part of the Union or United States of America (Blue).
The Union was the better supplied force of the two, and their uniforms were consistently blue. The Confederate uniform was grey - however, not having the logistics available to Union forces, the Confederates often had to assemble whatever they could, using uniform items, civilian clothing, and captured Union uniform items.
Grey
Their uniforms were grey.
Grey. At the war's first battle (Bull Run/Manassas), one Confederate unit was wearing blue, and managed to capture a couiple of Union batteries, because the gunners thought they were friend not foe.
Well-placed Union artillery held their fire when they saw men in blue uniforms approaching, and did not realize that these were from a Confederate unit which had not yet acquired their grey uniforms.
Grey
Grey