Lindon’s Battalion employs a gray and red paint scheme.
Per FM: Merc (revised), page 87.

Other references:
Spector, FM: Mercenaries (plate 14)
Commando, CM: Mercenaries (p 110)


Insignia:

Their insignia, a golden knight chess piece set over a circular blue field, is painted on the torsos of ‘Mechs or on the fuselage of fighters. Fighters are also decorated with the image of a green bird, plastered across the nosecone as if the fighter had just rammed it. Per FM:Mercenaries Revised, page 87.