1. In the bowl of an electric mixer combine egg whites, sugar and corn syrup. Set bowl over saucepan filled 1-inch of simmering water. Stir until mixture is hot and sugar is dissolved, about 8 minutes. Return bowl to mixer fitted with a whisk attachment and whip on high speed until mixture holds stiff peaks, 10 minutes. Immediately transfer to a piping bag fitted with an open coupler or 1/2-inch plain tip.
2. Pipe meringue by pulling piping bag straight up to create tall towers. Immediately sprinkle with colored sugar in a gradient pattern.