I think I posted here before, but I remember "The Crimson Everythings". So ignore that, here's the real one
Armor: A mix of Blood Red, black with red markings and personal taste on commanders (generally follows the red/ black combination, gold is a common colour)
Hands: Veterans have black gauntlets
Chapter Symbol: Marks to represent battle scars cut into the left shoulder by a veteran's power weapon. Veterans have their scars broadened and expanded by Raktra himself (more on him later)
Eyes: Red, no matter what
Leader: As a wildcard Chapter, similar to the Space Wolves in their refusal to follow codex organisation, the Architects have no chapter master. Instead, they are lead to battle by their most ferocious warrior, known as Raktra the Berzerker.
Rather more Chaosy than most, as the rest of the fluff (which I will post later) will show you. Hope you guys like it.