With just a few drops of paint on the wooden paintbrush, children can colour in the illustrations as if by magic! The black areas, covered with a special paint, instantly change colour when they come into contact with water: an original, mess-free, and fascinating process for children. Easy to set up: painting is guided by a varnish which helps to limit spillover. This activity includes everything needed to create beautiful pictures, is mess-free and doesn’t require cumbersome equipment. Surprise guaranteed: which colour will appear under the brush? Content : 4 boards to paint, a little wooden paintbrush and 1 booklet.