Preheat the oven to 275°F (140°C) for fan-forced or 320°F (160°C) for conventional. Line cupcake tins with liners.
Mix dry ingredients: flour, sugar, baking powder, and salt. Add softened butter and mix until crumbly.
In another bowl, combine eggs, milk, oil, yogurt, tequila, and vanilla; mix well.
Divide the batter into two portions. Add pink and red food gels with strawberry flavoring to one, and yellow food gel with mango flavoring to the other.
Pipe alternating layers of strawberry and mango batter into liners.
Bake for 40–50 minutes or until a toothpick comes out clean. Cool completely.
Prepare frosting, divide into two portions, and add respective food gels and flavorings.
Dip the rims of cooled cupcakes in water, roll in granulated sugar.
Pipe frosting in swirls, alternating strawberry and mango flavors.
Garnish with lime wedges and strawberry halves. Serve and enjoy!