The Pride of Tamar
The Royal Guards use a distinctive color scheme for their 'Mechs and vehicles: a base of Steiner blue with a gold stripe down each side. Additionally, weapon barrels are painted gold, as are hatches and sensors.
Per FM: Lyran Alliance, page 95.
Manticore, Camo Specs (p 44)
The insignia of the Guards takes the form of a blue shield rimmed with gold, upon which is a white crown. The insignia of the Third Royals shows a golden rattlesnake. Per FM:Lyran Alliance, pages 95 and 98.