I think Richard answered the quesiton of dress colour a couple of days ago. This being a subject of interest to me, I will reinterate his reply. Personal taste dictated the style of dress in the same manner in the early 19th century.
Civillian dress is proboable the most difficult to reproduce effectively.
The nuances of uniforming are often apparent in extant examples, portraits, and regulations. The variability of common or middlin' dress precludes any simplistic rule of construction. All rights reserved.