boil eggs, crack the shell, then reboil in colored water.these are awesome! I don't reboil I just let them some in food coloring and water. Best if you put a drop right in the middle of the crack in your egg before putting in water!
Easter egg color chart -Mix cup boiling water, 1 teaspoon vinegar and 10 to 20 drops food color in a cup to achieve desired colors. Repeat for each color. Dip hard-cooked eggs in dye for about 5 minutes