If you are using meringue powder, use 1 tbsp meringue powder and 3 tbsp water in place of egg white.
Whisk egg white until frothy.
Slowly add powdered sugar until incorporated and peaks form.
Add vanilla flavoring if desired.
Divide equally into as many bowls as you want to color.
Add one drop of color at a time to each bowl to achieve desire color.
Beat until color is uniform.
Transfer each color to a zippered sandwich bag.
Print template and place under each paper you will be piping onto as you do it.
Clip a very small tip off of one corner of each bag and pipe dots onto unprinted sheets.
Allow to set for 2 hours before cutting strips apart.