Cleansed by Dragon's Dark Passing
The 7th Ghost marks its machines with steel gray accents. Its warriors paint a length of chain on their BattleMechs, the links beginning at the right wrist, coiling upward to cross the front of the torso and then cascading down the 'Mech's left leg. The chain breaks where it crosses the House Kurita crest on the 'Mech's upper-right torso, which symbolizes how each warrior's current service to the Dragon has severed his or her ties to the past. One link on the chan is gilded in gold for every 'Mech kill credited to the pilot.
Per FM:Draconis Combine, page 117.
Atlas, FM: Draconis Combine (plate 7)
The Ghost regiments do not have a regimental crest, as that designation serves as an administrative classification more than anything else. Per FM: Draconis Combine, page 112.