Coloured row of books form a colourful rainbow. (art, artistic, bright, color, colorful, multicolor, rainbow, shape, style, stylish, book, education, hardcover, literature, reading, textbook, school, children, learning, smart, school, preschool, learn, grow, nature, railway, rail track, arch, discovery, diary, daycare, preschool, educate, education, learn, learning, study, tutor, tutoring)
