Orange Creamsicle Cupcake

I haven't tried this yet but I am going to asap

Creamsicle Float Cupcakes
Cake:
3/4 c. butter
3 eggs
2 1/2 c. all-purpose flour
2 1/2 t. baking powder
1/2 t. salt
1 1/2 c. sugar
1 t. vanilla
1 t. orange flavoring
2 t. grated orange peel
3/4 c. milk
1/2 c. orange Fanta
6 drops of yellow food coloring
6 drops of red food coloring

Let butter and eggs sit at room temperature for 30 minutes. Meanwhile, line cupcake pan with cupcake liners. In a medium bowl, stir together flour, baking powder, and salt. Set aside.
In a large mixing bowl beat butter with an electric mixer on medium to high speed for 30 seconds. Gradually add sugar, about 1/4 c. at a time, beating on medium speed until well combined and scraping sides of bowl. Beat on medium speed for 2 minutes more. Add eggs 1 at a time, beating after each addition (about 1 minute total). Beat in vanilla, orange flavoring, grated orange peel, and food coloring. In a separate bowl or measuring cup, mix milk and orange Fanta together. Alternately add flour mixture and milk mixture to butter mixture, beating on low speed after each addition just until combined. Fill cupcake cups 1/3 full. Bake at 375 degree F for 13-15 minutes. Yields about 3 dozen.

Marshmallow Frosting:
4 large egg whites
1 cup sugar
1/2 t. cream of tartar
1 t. vanilla extract

Mix egg whites, sugar, and cream of tartar in a double boiler or heatproof bowl over simmering water. Whisk constantly for 3 to 4 minutes or until sugar is dissolved and egg whites are warm.
Remove the pan or bowl from the simmering water and stove. Using a hand mixer or electric mixer fitted with the whisk attachment, beat, starting on low speed, gradually increasing to high, until stiff, glossy peaks form, 5 to 7 minutes. Add vanilla, and mix until combined. Use immediately.