The Dioscuri: Riding the Lightning
The Dioscuri paint their machines in a chaotic swirl of dark blue and black, with silver-white lightning streaks.
Per FM: Merc (revised), page 60
Other references:
Vindicator, FM: Mercenaries (plate 15)
Grasshopper, CM: Mercenaries (p 108)
The mercenaries’ insignia is the hand of Zeus reaching out of a web of lightning. The insignia is placed over the upper torso of their ‘Mechs or on the sides of aerospace fighters and vehicles. Per FM:Mercenaries Revised, page 60.