Preheat the oven to 350°F (175°C) and mix the cake mix according to the package instructions. Spoon about 2 tablespoons of batter into each sugar cone, filling halfway. Bake for 15-18 minutes or until a toothpick inserted comes out clean. Let cool completely.

Trim any excess cake from the top for a clean finish. Spray with black color mist food coloring evenly and let dry completely.

Divide the creamy white icing into separate bowls. Add drops of yellow and desired colors (rose, violet, golden yellow, and orange). Mix until vibrant hues emerge and prepare piping bags.

Pipe a ring of orange icing on top of cooled chocolate cookies. Place a black-coated sugar cone in the center and press lightly to secure it. Use additional icing around the base of the cone.

Pipe small yellow buckles around the sugar cones using lemon yellow icing. Let the decorations dry completely before serving or packaging.