The parade colors of the Federated Commonwealth Corps are navy blue with gold banding on the arms and legs. Gold is also used on the upper torso of the 'Mechs and the turrets of armor units to highlight panels, resulting in a checkerboard pattern.
Per FM:Federated Suns, page 90
The insignia of the Federated Commmonwealth RCTs is a hybrid of that used by the Federated Suns and Lyran Commonwealth; the backdrop is the Davion Sunburst, over which is the mailed fist of House Steiner, and in front that the Davion Sword. The new insignia of the Eighth FedCom RCT shows a Hurron Warrior BattleMech transfixed on a broadsword. Per FM:Federated Suns, pages 90 and 96.