The Grenadiers use a black paint scheme with blue flames, complementing the unit's insignia. For each kill, a Mechwarrior is allowed to paint a red lightning pattern on his 'Mech's left side.
Canonized by Jal Phoenix on 4/15/2005
Thanatos, CB: Miniatures Rules (p 19)
The Grenadiers' insignia is a white torch with a blue flame, the same as that of Kestrel’s ducal family.
Per FM:Federated Suns, page 49.