The Night Stalkers favor blacks, grays and dark blues.

Per FM:Draconis Combine, page 104.

Other references:
Atlas, FM: Draconis Combine (plate 6)
Exterminator, Daikyu, Kintaro, Katana, CM: Kurita (p 3)
Phoenix Hawk, CM: Kurita (p 97)


Insignia:

The insignia is a skeleton wrapped in a dark cloak. Per FM: Draconis Combine, page 105.