Effects of Blue Food Coloring

Whenever we make frosting in our household, we usually prepare blue.  It takes a lot of food coloring however to change a white icing into the blue one usually finds in a color set at a restaurant, which is the hue of blue that Max likes the most.  I realized that when we made cakes during the Winter, Max must have still been in his diapers because I had never seen T H I S before:  blue poo in the toilet.