Bible Coloring Book

Trick: The magician flips through the pages of the coloring book and shows all blank pages. He then taps the book and flips through it again. This time, the pages have pictures relating to the bible in it, but they are just the outline and no color. Now the magician taps the book one more time. This time when he flips through the pages, all the pages have pictures with color in it. The magician then waves his hand over the coloring book, flips through it and shows that all of the pages are blank again.
Info: Easy to do.