Get your most beautiful gray pencil! The Brutalist Coloring Book is a new coloring book for adults that pays tribute to the finest achievements of brutalist architecture . A project created by the Belgian designer Marc Thomasset , based in Brussels, who proposes you to color large flat areas of raw concrete to relax. The Brutalist Colouring Book is available on the publisher’s website . And if you like coloring, I recommend you also the excellent Adult Activity Book , or the Game of Thrones coloring book and the series Violence et Coloring .