Boil the eggs for 15 minutes
Put the eggs into a cold water bath until eggs are cool
Roll eggs on the counter to crack the shells. Do not peel the shells yet.
Put the eggs in a ziplock bag with the food dye of your choice and a few drops of water and let sit for an hour. The more concentrated the food dye is, the less time they need
Peel and rinse the eggs
Slice the eggs in half lengthwise
Remove the yolk from the egg and put into a bowl
Add mayo, mustard, pickle juice, and other food coloring and mix
Use a piping bag with tip of your choice or a spoon to fill the egg whites with the egg yolk mixture.