I've made so many batches of these royal icing sugar cookies that I can now almost do it without a recipe. Well, at least the icing I can. For these scary Halloween cookies, I simply made a small batch of white royal icing and piped the ghosts, then dyed the excess orange with two drops yellow food coloring and one drop of red food coloring. It makes the perfect color orange! Once those dried, then I filled them in with a larger batch of icing, again starting with the white.
On a side note, a good friend of mine told me to just put some powdered sugar and a small teaspoon (or less) of meringue powder in a bowl. Then, slowly add a small amount of water at a time. If it gets too watery, add more powdered sugar. This will be your basic white color. I know most people use Wilton's coloring, but I have used it before and personally I think it tastes horrifyingly awful (words cannot describe how much I dislike them). Using basic food coloring actually doesn't change the consistency of the icing. If you feel like it is too watery from that, then just add a little more powdered sugar; no harm done!
Before the icing was dried I sprinkled the orange and black sugar sprinkles on the pumpkins and put red hots on the ghosts for eyes. Use what you have in your pantry! I had these sprinkles and red hots from previous recipes so I thought I'd use them up before they went bad. Be creative and have fun this Halloween!