Each time that I have made Black Frosting I did it freehand, so to speak. I never had a recipe to follow. Now days u can buy black food coloring, but I find it meer fun to mix the color myself. I start with a container of white frosting in either vanilla of cream cheese flavor. If u have a box of primary colors(red, blue, green, yellow) food coloring it will tell u how to mix purple. This is a good starting point. Once u have the basic purple u can add small amounts of green. Always check the flavor of the frosting while mixing because sometimes too much food coloring can make it...