That's right, not only have I desecrated a twenty-year-old Warhammer 40K blister pack, I've converted one of the figures!!! I really didn't need another captain, but my Howling Griffons do need a bearer for the battle Company Standard, so I cut off the power sword and added a banner staff. I think I'll enlist Conscript Brian (in his guise as proprietor of Vaubanner Graphics) to create a suitable standard.
Oh, and are Space Marine Librarians always supposed to have blue power armour? I'm about to hit the books to research this... nothing in Chapter Approved: The Book of the Astronomican, but I'll also check the 40K Compendium and Compilation. Oh, and the Internet too, if it comes to that ;-)