I do'nt know if this what your after but I found it in my April 2003 Family Fun magazine.
Take shells off hard boiled eggs. In glass bowls, mix one cup of boiling water, 2 teaspoons of white vinegar, and 20-30 drops of food coloring for each color. Then softly drop in the hard boiled eggs, a few at a time. Swirl them around for a minute or two, until tinted to your liking, then blot them on paper towels and follow your favorite deviled egg recipe.
The picture makes them look really pretty.