Preheat the oven to 350 F. Line a muffin pan with yellow cupcake liners.

In a medium bowl, combine the flour, baking powder, and salt. Set aside.

In a large bowl, beat the butter and sugar until light and fluffy. Add the eggs and vanilla and beat until combined.

Gradually add the flour mixture to the butter mixture, beating on low speed. Add the milk, juice, and zest, and beat until combined.

Divide the batter between the cupcake liners, filling about ⅔ full.

Bake for 15-18 minutes or until a toothpick inserted in the center comes out clean.

Let cool in the pan for 2 minutes before transferring to a wire rack to cool completely.

In a large bowl, beat the butter until creamy.

Add the sugar, juice, and milk and beat until combined. Add more sugar or milk if needed.

Add a few drops of yellow food coloring and beat on high speed until fluffy.

Transfer to a large piping bag fitted with a large star tip.

On a flat surface lightly dusted with powdered sugar, roll out a small amount of black fondant. Using a small cutter or a sharp knife, cut out music note shapes. Set on a piece of wax paper until ready to decorate.

On a flat surface lightly dusted with powdered sugar, roll out a small amount of white fondant. Using a small round cutter, cut out small circles. Place on a piece of wax paper. Using the edible food marker, draw the Powerline logo on each circle.

Take a small amount of white fondant and add a couple drops of yellow food coloring. Mix, using your hands, until the color is evenly distributed. Roll out the yellow fondant on a flat surface lightly dusted with powdered sugar. Using a small cutter or sharp knife, cut out lightning bolt shapes. Place on a piece of wax paper until ready to use.

Pipe a swirl of frosting onto the top of each cupcake.

Sprinkle a mix of purple, pink, and yellow sanding sugar or sprinkles on top of the frosting.

Add a fondant decoration to each cupcake, gently pressing it into the frosting.