For the office? Paint pipe a bright metallic and the wood a washed color? V Scaffolding Boards and Dark Steel Pipe Wall Mounted and Floor Standing Industrial Chic Shelving/Bookcase - Bespoke Urban FurnitureDesign
Line: The book shelf in the room shows the use of line because the book shelf shelves are built against the wall forming a miniature tree. Our eyes are drawn to look at the book shelf tree from bottom to top and outward to the tree/bookshelf branches.