Floating shelves look fragile to the naked eye because of the way they sit on the wall. All the workings of the brackets are hidden so it seems as though they are floating there on the wall. In reality they are usually much stronger than other types of shelves which are supported with traditional brackets and screws.
Good, well thought out interior decorating can add balance to a room and bring out its best features. Interior decorating should form the background for the way you choose to live in your home. If you have got a lot of books then it stands to reason that you will want plenty of good shelving. Plain wood shelves look best for this but if you already have some and they are beginning to look past their prime then play safe and paint them white. Think about the lighting in a room because this can enhance or detract from its overall design.