In a large mixing bowl, cream together the butter with the sugar until the mixture is light and fluffy.
Then add in the eggs (1 at a time) and the vanilla extract.
In a separate mixing bowl, whisk together the flour, baking powder and baking soda.
Then stir the dry ingredients into the wet ingredients until a dough is formed.
Then divide the dough evenly into 4 different mixing bowls.
Add 2 Tablespoons of each Jell-o mixture into each of the mixing bowls. Then add a few drops of food coloring into each dough as well (the same color as the Jell-O). Then knead each of the doughs until the Jell-o is mixed in and the dough is a vibrant color
Roll the dough into 1 inch balls and roll them in the remaining jell-o powder.
Then place on a baking sheet approximately 2 inches apart and flatten the dough out with the bottom of a glass.
Bake for 8-10 minutes until the edges are set and slightly golden brown.
Let the cookies sit on the baking sheet for 5 minutes.
Then move them to a wire rack to cool completely.
Notes
Store the leftovers in an airtight container at room temperature for up to 5 days.
Keep a slice of bread in the container for the cookies to keep them moist.