Make the yeast raised donuts according to directions on the bag. Fry, cool. Mix blue and pink flat icings to create purple flat icing, adjust to desired hue. Heat blue, pink, and purple flat icings at 100 to 110 degrees in microwave or boiler. In a large mixing bowl, pour blue, pink, and purple flat icings in separate portions within the bowl. Dip donut in the center of the bowl to ensure all colors top the donut. Allow icing to dry, then gently press edible gold leaf on each donut.