Mercenaries

Stone Ponies

Heart of Gold

The Ponies use a rough rust-and-black camouflage scheme.

Per Mercenaries Supplemental 2, page 61.

Other references:
Cronus, Mercenaries Supplemental 2 (color plates)

Color Scheme
Insignia

Their unit insignia is a herd of wild horses thundering across a barren wasteland. Per FM: Mercenaries Supplemental II, page 61.