The ‘Mechs and vehicles of the Royal Brigade commonly wear paint schemes based on the requirement of their current assignment, though for parade and ceremonial purposes the Royal Brigade makes use of a blue, white and red striped scheme, the colors of the Davion family.

Per FM:Federated Suns, page 75

Other references:
Atlas, Camo Specs (p 38)
Templar, RS: 3067 (front cover)
Templar, Sagittaire, IS BA, Grenadier BA, Alacorn, Longbow, Combat Equipment Guide (color plate 7-8) Battlemaster, Victor, Cyclops, Devastator, Total Warfare (p.36)


Insignia:

The Brigade’s insignia is a variation on the Federated Suns’ crest, with each RCT adding its own modifications. The Crushers’ insignia shows the head of an Atlas set on a stylized version of the Brigade’s crest. Per FM:Federated Suns, pages 75 and 76.