Coloring books are just for children. Coloring books are also for teens and adults. Street art and graffiti coloring books exist as well. These coloring books are the perfect playground to explore different color combinations and schemes. Graffiti coloring books are also great for creatively burning time. Coloring is a great way to express creativity, without having to put too much work into the initial design. Color in between or outside of the lines with street art coloring books from GlobePainter.