A Rocky Start

The Widowmakers paint their machines black, with a red spider-like mask (rumored to have changed from gold due to Major Wannamaker’s resentment towards the Dragoons, and the possibility of a feud) painted over the faces of the unit’s BattleMechs and the fighters’ engine cowlings.

Per Mercenaries Supplemental, page 64.

Other references:
Axman, Mercenaries Supplemental (color plates)


Insignia:

A red spider-like mask is their insignia. Per FM: Mercenaries Supplemental, page 64.