I helped this couple move earlier this year. They had the dining table + chairs, lounge chair, sofa and area rug and lots of art. Envisioning using this long wall as an art wall, I suggested bright white walls and minimal white furniture as not to detract from the art. We went with the three Ikea bookcases since I knew much of the art needed framing and I know how much that can cost.
I love the way the bookcase came out. Since these shelves are pretty deep I was able to layer some of the smaller books to give it more depth and interest. They said to do it whichever looked best, not necessarily by subject or author. For more pics and info, click here.