Bring water, vinegar and onion shells to a boil in a stainless steel sauce pan.
Lower heat and simmer 45 minutes.
Strain into glass bowl and let cool
Once it is cool, place eggs in single layer in sauce pan and pour the onion dye water over the eggs
Cover and bring to boil over medium heat. Lower to simmer for about 15 minutes.
Check color for desired shade. If after 20 minutes it still isn’t dark enough, take the eggs off the heat, cool and place in the fridge for longer dying.
Strain eggs into rack and let cool. Shine eggs using a little oil on a paper towel.