Earlier this year, I read about Thatcher Wine in the New York Times. His business, Juniper Books, embraces two of my favorite pursuits: books and design. Wine specializes in creating libraries for customers, often covering books to emphasize a theme or a color. From a reader's point of view, the books aren't necessarily pick-up-able, but from a design perspective, the effect is crisp and organized and very appealing. I find his work very inspiring.
Books were wrapped in orange paper, then stamped with letters that define the theme. Imagine cookbooks or travel books or mysteries done this way.
Books wrapped in complementary colors could enliven a shelf.
The potential for themes is endless. Here is a sports car; below is wine.