Still raiding the NYPL arcchives for images of Saxons. Resorted to Preben Kannik's classic to get to grips with the subject.
1849 army formed in brigades. Austrian style shako worn. Service colour changed in 1862 from Green to Blue. Collar cuffs and piping according to brigade colours - red for the first, yellow 2nd, black for the 3rd and white for the 4th, all with red edging. Leatherwork black in the Prussian style after 1849. Presumably the Jagers (see below) were in dark green. Uniform changed in 1867 when they joined the North German Confederation to a Prussian style helmet with a dark blue coat.