The colour scheme looks great. I have those Ikea shelves and I love them however mine are the 4 X 4 in the birch colour for the playroom. I do have the dark brown colour elsewhere and I would recommend against it. Any damage that happens to the shelves (nicks, scrapes, bumps etc) shows up like crazy as it's particle board underneath that colour. The birch is the same colour almost as particle board so if any damage happens it is not nearly as noticeable.