You flip through this coloring book, showing normal coloring book type pages that have a magic theme. The next time you flip- all the pictures are brightly colored! The third flip makes all the pages blank! Finally, the pages are normal again.

Very, very easy, even for children to perform! Best of all, it can be repeated immediately, and performed again and again without setup or skill. It's all in the gimmicked book!
 
For smaller hands, please see the Pocket Coloring Book, which is the same trick but in a smaller size.