At bath time Friday night Mabel tried out something new. Into the tub she dropped two small chalky-looking child-safe tablets, one yellow and one blue. They started to dissolve immediately, like liquid smoke in swirling plumes of color. Mabel was transfixed, and Daddy was happy to see the success of his novel gift. What resulted after Mabel had immersed herself and the tablets had finished fizzing? Green bath water!