'Mechs and fighters are painted a combination of red and orange.
Per FM:Crusader Clans, page 46.
Cauldron-born, FM: Crusader Clans (plate 3)
Salamander BA, CB: Miniatures Rules (p 30)
The Clan Fire Mandrill standard always appears on military machines, though not always prominently displayed.
The Kindraa insignia is a stylized black dragon's head breathing fire, set over a green field. Only front-line Clusters may take additional names and insignias.
Per FM:Crusader Clans, pages 44 and 46.