A book of its own on this shelf: a name, and what it holds. The notes stay where they are and the book follows them.
Hiding a shelf never deletes it. Reorder with the arrows; the order here is the order of the library.
Fourteen colours, each with the ribbon its books hang. A ribbon you have not chosen is the complement of its dye, so it follows the look; a book keeps a colour you gave it by right-clicking its spine.