Confederate Dress uniform regs specified a style very similar to that of the Federal government, in appearance.
Infantry A sky blue kepi with dark blue band at the base, a grey frock coat with sky blue collar and cuffs, sky blue trousers, and black brogan shoes. Equipment straps black leather, with black knapsack/backpack.
Cavalry, same except for a yellow crowned kepi and yellow collar and cuffs, and Artillery likewise with a red crowned kepi, red collars and cuffs.
The piping on shell jackets should be in the Arm of Service colour.
As you can see each Arm of Service had its own colour Infantry:sky blue. Cavalry ; yellow, and Artillery: Red.
These colours would appear on collars, trouser stripes and chevrons for NCOs and kepis. (The same Arm of Service colours as used by the Union Army). The NCO trouser stripes varied in width according to rank.
NCO badges of rank were almost identical to the federal ones, the officers distinctions were very different, being worn on the coat collars, and in the form of Austrian knots embroidered above the cuffs of the coat or jacket.
Needless to say this proved impossible to maintain, as the Confederate government made each state responsible for outfitting its own troops. At the start of the war many units were made up of militia troops, and most regiments were made up of 10 companies, each one being a militia unit in uniforms different from the rest of the regiment. These uniforms proved very unsuitable for combat, and many rebs relied on captured clothing, especially Yankee trousers and shoes, and Yankee greatcoats in sky blue were very popular. They also wore their own clothing bought from home.
One or two states outfitted their troops very well, North Carolina being a good example, but they refused to supply to other states. At the end of the war there were reportedly over 50,000 new uniforms sitting in North Carolina depots that could have clothed the bulk of the Army of Northern Virginia.
Hope this brief guide helps, but I would be happy to answer queries in more detail.