Lago Scratch Coloring Postcard Fireworks/Set of 4/1 Scratch Stylus Scratch coloring postcard features beautiful fireworks images hidden beneath a gray outline, plus a plastic stylus to reveal them with just a simple scratch. Easy to use, amazing results; great gift and a great introduction to Scratch Art. When you color with the plastic stylus, the top layer of the paper scratches away, revealing a beautiful colors underneath. 1 set of 4 postcards: London, Paris, Sydney, and Hong Kong