Pour 1 cup of water, 1 tsp of vinegar, and drops of food coloring in each glass. The food coloring should tell you how many drops you need for each desired colors.
Peel & cut your hardboiled eggs in half lengthwise.
Remove your egg yolks into a bowl
Add the cut egg halves into the glasses filled with the water/vinegar/food coloring mixture.
While they sit, work on your filling. Add mayo, mustard, vinegar, salt, and pepper to your bowl with the egg yolks.
Use your hand mixer to get an ultra smooth consistency.
Once you get the desired consistency and taste, take a gallon zip lock bag and stick it inside a tall glass. You can refrigerate in the bag until you're ready to fill the eggs.
Check your eggs for the desired color. There's no real right time. If you want them lighter, they probably need about 10 minutes. If you want a darker color, you may need to add more time or food coloring.
Remove your eggs from each glass with a pair of tongs or something to avoid dipping your hands in. Set on paper towel.
Once the eggs are dry, add to your serving platter.
Add your filling to the zip lock bag and cut the tip. This will create a piping bag and make it easier to fill the eggs
Fill the eggs with the piping bag
Add paprika for garnish