This question has options. How would someone go about accomplishing this goal?
How to make purple icing

OPTIONS:
1). Beat frosting until fluffy and then add 10 drops of green food coloring for every five drops of blue coloring. Add color until you achieve your desired hue.
2). Beat frosting until fluffy and then add 10 drops of red food coloring for every five drops of blue coloring. Add color until you achieve your desired hue.
2).