Finally did the Sisters of Silence, I painted them in silver and cold tones so they would be the ying to the golden/warm custodes yang. Such dark colours also keep in with their secret operations theme, this dual nature of the "Emperor's Talons" marvellously represented in Sam Wood's artwork.
Stand in Jenetia krole
Throne of Terra, not another alfa psyker, every monday the same...
Hands of the Emperor, by Sam Wood
Sister-custodes size comparison, these are big guys!