Because of Omicron's defensive nature and use of confusion on the battlefield, it uses appropriate camo, with the shoulders and heads of its 'Mechs painted in a blood red which then has black triangles stenciled over the red. Red slashes on the legs represent kills credited to the pilot.
Canonized by Savage Coyote on 03/08/04.
The insignia of Omicron Galaxy is a black, marbelized blood drop.
Per FM:Crusader Clans, page 33.