Here is my Leib-Bataillon shown in two half battalions advancing in line. The lead half battalion is largely converted Esci Russians and RSM. The rear half are mostly Hinton Hunt with some S Range. Most are in the 1815 dolman but some are in the earlier Litewka.
The problem is achieving a sense of contrast with black uniforms, especially given that I put a gloss varnish on my figures.