Machines are painted bleached bone on the right side, while the left is a base green with bleached bone camouflage patterns. The right legs of ‘Mechs are adorned with barbed wire art. Per Mercenaries Supplemental, page 27.
Erratum: the text in the book is incorrect. The barbed wire art belongs on the right leg.
Other references:
Cerberus, Mercenaries Supplemental (color plates)
Quickdraw, CM: Mercenaries (p 109)
The Renegades’ insignia is a bovine skull with a broken horn flanked by twin sabers. Per FM: Mercenaries Supplemental, page 27.
