Old Blood and Guts
uses Clan Star Adder's standard colors of black and dark blue, highlighted with gold trim.
Per FM:Crusader Clans, page 123.
Blood Asp, CB: Miniatures Rules (p 30)
All Adder 'Mechs and fighters bear the Clan insignia on the left arm or wing and right leg or empennage. Galaxy insignias are displayed on the right arms or wings and left legs or empennages, while Cluster insignias are worn on the right torsos of 'Mechs or the fuselages of fighters.
The Galaxy's insignia is an old-style Terran tank running through a field of fallen foes.
Per FM:Crusader Clans, pages 118 and 123.