2Beat egg whites at a high speed using an electric mixer. Add 2/14 cup powdered sugar gradually. Continue to mix until stiff peaks form.
3To add food coloring:
Separate batter evenly into 3 separate bowls. Add 3 drops of blue dye to one of the bowls, and 3 drops of red dye to another bowl, leaving the third bowl plain white. Carefully fold the batter in each bowl to incorporate the color.
4Put batter in a ziplock bag and cut a small hole in the lower corner (you may use a piping bag if you have that).
Pipe batter onto a parchment lined cookie sheet. Bake for 3 hours. Cool & serve.