The 17th Galedon uses a white and gray color scheme on active duty, switching to flat gray with black accents for parade colors.
Per FM:Draconis Combine, page 65.
Catapult, CM: Kurita (p 103)
The Galedon Regulars insignia is a gray-white katana set over a field composed of one blue and one black triangle. This insignia is always painted on a BattleMech’s upper right leg or on the fuselage of an aerospace fighter. The unit insignia is a blue star burst, painted on each ‘Mech’s shoulder or near the front of any other vehicle. Per FM: Draconis Combine, pages 59 and 64.