Create your own custom-coloured Thinking Putty with a Mixed by Me Kit. Each kit includes five tins of clear putty, three concentrated colour putties, three special effect putties, and an instructional mat everything you'll need to make cool Thinking Putty colours that are all your own. When the mixing is done, the fun's just begun. Play with your new colours by day, and enjoy their awesome green glow by night. You can even use the included coloured pencils to decorate your tins to match.