I've tried to gather solid intel on what a Deathwatch librarian's armour would look like.
As we all know, when a marine enters the service in DW, his armour is painted black apart from the left arm and both pauldrons. The right pauldron is sporting the original chapter insignia while the left one is inscribed with the DW symbol. So far so good.
As per the Codex Astartes, a librarian's armour is blue, regardless of his chapter's colours, to differentiate him from the others. His left pauldron sport the chapter symbol while his right one bears the Librarian symbol. Right.
So what happens when a librarian enters the service of the Deathwatch?
Deathwatch pauldron to the left, Librarian pauldron to the right, Chapter symbol... lacking?
Paint the armour black... or keep it blue as per the codex?
Is there an expert in the house that can help me with this?