Finger painting

Mama has been refraining from letting Gwendolyn to play with paints at home, just in case she perform her masterpieces on the walls and furnitures! But luckily, with the advancement in technology, Crayola has come up with a solution to ease Mama's worries...paints that will only appear on special papers! Well, this translates to more expensive play materials, but it will save on cleaning costs or potential damages, which should be substantially higher than the cost of the special papers!