@agentmanatee oh no@Wraithblade6 Yes, his armour is 90% black. That is why Lucius failed to see him in the rather dark room. Or at least wasn't paying attention particularly well, which I think is fairly understandable even for a Space Marine given that he's just gotten out of a large-scale fight, having literally been impaled through the torso by a Genestealer, amongst other rather serious injuries.
EDIT: By the way, Wraith, it's worth mentioning, but I read over your previous post, and I noticed a pretty significant detail. Namely, Xeph bleeding out. Space Marines aren't particularly capable of bleeding out. Their blood crystallises almost immediately after an injury, which seals it off rather quickly.