Lyran Guard equipment is painted blue, with white applied as a broad vertical stripe covering portions of the right torso, arm, and leg. For vehicles and aerospace craft, the stripe covers some or all of the right side.

Per CSO (edited 8/5/23) and Per FM: Lyran Alliance, page 74.

Other references:
Wolverine, Camo Specs (p 22)


Insignia:

The Lyran Guards’ insignia depicts a stylized white horse head that appears on the left leg of BattleMechs or the left side of vehicles. Regimental insignia appear on the right leg or side.  Per FM:Lyran Alliance, pages 74 and 77.