In a stock pot combine 8 cups of water with black food coloring. Place eggs in a single layer, cover and bring to a boil. Remove from heat and let stand for 15 minutes.
Using a slotted spoon, place eggs on paper towels. Place colored water in fridge to cool. Use the end of the a wooden spoon to tap each egg in several places to slightly crack the shell. The more places you crack, the more veins the egg will have.
Place the eggs back into the cooled water and let sit for 2 to 3 hours. The longer they sit the darker the veins.