The painted gray finish on this bookshelf with glass sliding doors has a distinct French blue undertone. This will cause it to look more blue than gray once it’s set up. Paint your walls a pretty pale blue-gray color like Behr Paint’s Light French Gray or Benjamin Moore’s Silver Gray or Smoke. This will make the bookcase look like a custom piece of furniture. To customize it, even more, buy a roll of French toile wallpaper and apply it to the inside of the back of the bookshelf before assembly.