In a cup combine ½ cup of boiling water, packet of Kool Aid and 1 teaspoon vinegar. Stir until the Kool-Aid is dissolved. Repeat for as many colors as you'd like.
Gently add the eggs to a cup of Kool-Aid water and let sit for 1-2 minutes or until the desired color is reached.
Remove the egg with a spoon (slotted works great!) and gently lay it on a paper towel trying not to touch the egg to much.
Allow to dry for 5 minutes or until it is no longer wet. Place back in egg carton for storage. Store eggs in refrigerator if planning to consume them.