The digital age put a dent in the book business. But it hasn’t diminished the appetite for patterns, colors and textures fit for a veddy proper library. Leather’s a natural in upholstery, along with dapper herringbone, houndstooth, flannel and other Anglophilic covers. Stone tiles and burled woods emphasize rich tonality. And don’t forget about curating real books, not by author, but color.