Want to add some extra sparkle to your frosted cupcakes or decorated cookies? But you want a particular color that you can't find in your local grocery store? A simple solution - put plain or clear coarse decorating sugar into a small plastic or glass container with a tight-fitting lid. Add food coloring one drop at a time, shaking the container vigorously to distribute the color between each drop. Use less for pastel shades and more for vibrant hues. (If you use a lot of color and the sugar starts to clump you may need to allow it to air dry prior to using.) Sprinkle the new, custom colored sugar on your cookies, cupcakes, or cakes.