Sigma Galaxy paints its units in blood red. A dark smoke color is applied to the arms and legs of BattleMechs, fading toward the torso. Armor and Aerospace use the fade from front to back.
Canonized by Sounguru on 2/6/2006.
Other references: None
Sigma Galaxy's insignia is the world of Foster, set against a blood-red teardrop.
Per FM:Crusader Clans, page 34.