A Kid Show Classic routine! Flip through the pages of the coloring book, show them black and white. The kids then toss invisible colors at the book, and all the pages become colored. Then have the kids erase the colors, and they apparently have erased too much, because the pages are all blank! Can make the three changes happen in any order you desire. Easy to do and loads of fun! Add a color changing streamer to magically give the colors to the children before they toss the colors at the book.