2Welcome to Teenage Mutant Ninja Turtles Coloring Book for Kids: *Coloring All Your Favorite Characters You can use any coloring tool (pencils, pens, markers, crayons)you like to have your own drawing style.*Every coloring page is designed to help relax and inspire, and also help calm kids down and make them be patient and peaceful! and they will have the joy of coloring and reduce stress!.