You can find shelves like this in many colors in contemporary stores or on the Internet. The new no-visible-means-of-support approach to shelves adds interest to the unusual shape.
The shelf below it is another piece with no visible supports. Choosing this type of shelving allows a sleeker and more modern line, and gives more emphasis to the items on the shelf rather than the shelf itself.
The books appear in no particular order in this room, but you could make choices to add style. For example, have each cache of books coded by color or size. Another design approach for books is wrapping them in either craft or white paper. The books then move from functional items to almost sculpture. Of course, if you want to actually use the books, you might want to place labels on each one with the title.
The room has walls that are minimally contrasted with the shelves and furniture. This decision helps each accessory stand out and positions the holders as strictly background. If those shelves were black or red, they would pop and the accessories would fade. That approach would work well in a more commercial environment.
If you’re handy, you could build this type of shelf. Also, since these pieces are modular, you could run this type of shelf along a wall for as long as you wish. The point is to combine design with function, and to have fun with both.