Preheat your oven to 350°F/177°C. Lightly grease a 9" x 13" baking dish. Decorate the top of the cake with the sprinkles, candy pumpkins, ghosts and cats and the tombstone cookies. Set the cake in the fridge to chill for 2 hours. Slice and serve! In a medium mixing bowl, combine cake mix, water, oil, and eggs. Stir until well combined. Pour the cake batter into the prepared baking dish.
Bake the cake for 30-35 minutes until a toothpick inserted comes out clean.
Set the cake aside to cool.
Using the handle of a wooden spoon poke holes into the cake.
In a medium bowl combine the instant pudding and milk. Whisk until smooth, about 3 minutes.
Separate the pudding into 2 medium size bowls.
Mix green food coloring into one bowl of pudding and mix orange food coloring into the second bowl of pudding.
Carefully spoon or use a clean cooking syringe to insert the pudding into the holes. I like to alternate colors.
Top the cake with the whipped topping.