The Contenders Chapter primarily wears dark grey Power Armour. This includes the helmet, torso, arms, shoulder plate trim, groin and upper legs. The power pack, shoulder plates and lower legs are a lighter grey. The red squad specialty symbol -- Tactical, Assault, Devastator or Veteran -- is indicated on the right shoulder plate. A black Roman numeral centred on the squad specialty symbol indicates squad number. The colour of the Aquila or Imperialis on the chest, indicates company number in accordance with the Codex -- i.e. White (1st Company), Yellow (2nd Company), Red (3rd Company), etc.