I have not paid much attention to forage caps. Did not realize Viskovatov left the Lancers’ caps blank. That Parkhayev plate is one of the few from his card sets that did not make it into “Russkaya Armiya 1812-1814” which may indicate some second thoughts on his part . Zweguintzow speculates it would be d.blue with facing (crimson for Lith.) color on crown and perhaps band pipings. Will check Lvov (and Leonov when I get it…) later.