Royal Blue, Teal, No Taste Red, Kelly Green, Golden Yellow and Black made that great purple.
In a pint wide mouth canning jar
1/4 tsp gel (wilton's) food coloring
1 tablespoon of vinegar.
Add 3/4 full of boiling water.
Gently lower eggs in the cup. The longer you leave the eggs in the dye, the darker the colors will be. Once the egg reaches the desired color, remove from the cup with a spoon and pat dry with a paper towel.
One happy Kid!