Angel’s Regiment
Angel’s Regiment paints its ‘Mechs and equipment a dark metallic blue, highlighted with a different color chosen by each battalion. For every battlefield kill, a MechWarrior may paint a blood-colored teardrop on his machine.
Per FM:Capellan Confederation, page 88.
Other references:
Black Knight, ilClan (p 118)
They all display the Confederation crest in addition to the Cavalry emblem, an armored knight with a red plume in his helm rising from a green triangular field. Each regiment except for the Wild Ones also displays a regimental insignia, usually on the back of the shoulder or the upper leg.
The unit insignia shows the outline of an angel in silver, set on a black field. For every battlefield kill, a MechWarrior may paint a blood-colored teardrop on his machine.
Per FM:Capellan Confederation, pages 86 and 88.