Prepare baking sheets with parchment paper, and a piping bag with a #5 tip.
In a medium bowl, whisk together meringue powder, powdered sugar and water.
Divide the icing into 4 small bowls.
Add a few drops of food coloring to each bowl. Mix until you reach desired color.
Place icing in piping bag and pipe out straight lines on parchment paper.
Repeat for all the colors and let dry over night.
Break up the pieces with your hands tomake sprinkes.