Personalized Kitty Trick or Treat Youth T-Shirt. Halloween Youth T-Shirt - Black with a cute purple kitty cat with green button eyes inside an orange trick-or-treat bag that says TRICK OR TREAT and funny purple spiders. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.