Here are some pictures of the promised Ultramarine Terminator Librarian. This model is absolutely covered in detail, so it was great fun to paint. The Ultramarine specific bit is the freehand on his left knee; that was the only flat area I could find on the model.
I went for a very traditional paint scheme (as I often due) with the blue armor and yellow tabard. This scheme often clashes with the colors in other marine armies, but fits right in with Ultramarines. I imagine Guilliman got some pleasure out of making all of the other Chapters follow his Legions color scheme.
My next project will be a break from the Ultramarines. The Executioners will be getting some more air power.