208 x 277 x 4mm
This book provides a welcome departure from the more traditional colouring books available today. But beware, the designs herein may boggle your mind, and confound your eyes; they are all visual illusions. Does the cube go in or out . . . is the line straight or curved? You'll have fun deciding which while colouring them at the same time. Almost any medium can be used, crayon, watercolours, felt tip pens, tempera, for results that may be more confusing than the original.