Match to futuristic/space Traveller ooh. this would be a super fun project. color-match spectrum of a favorite photo. even more so if the spectrum was also collaged from photos, not just color matched on illustrator.
This is a very cool idea to make a really plain bookshelf look great. Years ago I white-washed an ugly old bookcase of mine and painted the background in a sample paint of blue and it looks great - do (Diy Furniture Bookshelf)