You can Google pictures of other Confederate uniforms beside the "official" Cadet Grey (like the color worn at West Point and Virginia Military Institute) of the CSA. Militia units initially reported in their various uniforms (blue, grey, etc.), and as in the USA, there were colorful Zouave units among the early confederate troops. Officers were expected to purchase their own uniforms, and those who could afford it had them tailored. It is likely that there was much variation in those unis, even to the shade(s) of grey and to the finishings and facings. I don't know about the German tailoring.My favourite uniforms are Austrohungarian and confederates...but also French are beautiful.
I like very much Confederate uniforms.. but the "popular uniforms in movies"... I know in real life, in History.. Confederate lacked of uniforms.... they wore lot of different uniforms: not only Grey (likely grey was not as widely used as in movies, I think)...but green, red, dark blue (as Union), brown, etc etc...
According with a Spanish newspaper EL pais... Confederate Soldiers were the most elegant soldiers in history...
I have some questions: is it truth Confederate States choose grey color as the official colour uniform for the regular army? (I guess in real life many confederate never wore grey colour). is it Truth the confederate uniforms were designed by a great german taylor named Nikola Marschall, the same man designed the Confederate official flag?
I didn´t know Confederate choose grey as the official colour and I didn´t know a German taylor designed the official confederate uniforms..... I always thought confedeartes used so many colours: Black, green, Dark Blue, brown, red, etc (and also civilian clothes as the Boers)...and I didn´t know it was a great taylor who designed the dress!!!
As you mention, civilian clothes became increasingly common as the war dragged on due to logistical inadequacy. Many CSA soldiers were described as wearing mismatched clothing that was died a "butternut brown" (something like a khaki, but not standardized). I think the Southern soldiers presented a pretty scruffy appearance overall, but service in the field also made Union soldiers less than spit-and-polish. The El Pais article seems to have a romantic sense of the Confederacy which must have been tempered by the mud and the cold and the hunger after about mid 1863.
As for the Union, the Army of the Potomac had a reputation for better dress and cleanliness in the East, but the regiments from the western states of the Union were noted for a more undisiplined appearance. They fought well, though.