Tiger by the Tail
Though using appropriate camouflage in combat, for parades the Roughriders use a midnight blue with smoke highlights color scheme.
Per Mercenaries Supplemental, page 37.
Pillager, FM: Mercenaries (plate 13)
Cestus, Mercenaries Supplemental (color plates)
Their insignia is a fanged and horned skull on a dun shield. Per FM: Mercenaries Supplemental, page 37.