I'm currently working on a librarian for my Emerald Fists and his traitor counterpart; a sorcerer of nurgle. The army is an off-white cream colour so I didn't want the stark ultramarine blue colour scheme for my librarians. Instead I mixed a colour akin to shadow grey as a base coat and then followed up with space wolf grey, a black wash, more space wolf grey and skull white. The baby blue colour singles them out from the rest of the guys and follows the blue-scheme of librarians without being too stark in contrast. These models are also amazing sculpts. Once I return from Vegas I'll finish these two guys off.