Preheat your oven to 350°F (175°C). In a mixing bowl, combine your favorite cake mix with the store-bought chocolate cookies until well blended. Using a spoon, fill each sugar cone with the batter, leaving some space at the top. Bake the filled cones for about 15-18 minutes, or until a toothpick inserted comes out clean. Let them cool completely before decorating.

Once your cookies have cooled, carefully trim any excess cake at the top of each cone to ensure a clean edge. Next, spray each cone with black color mist food coloring to achieve that spooky look and let them dry completely.

Divide the creamy white decorator icing into separate bowls. In one bowl, add a few drops of lemon yellow icing color, and in the others, mix in rose, violet, golden yellow, and orange colors as desired. Use piping bags to fill each bowl with icing.

Pipe a generous amount of orange icing onto the top of each cookie to serve as an adhesive. Carefully place a sugar cone atop each cookie, pressing gently to secure it in place. Pipe additional icing around the base of the cone for a smooth finish.

Allow the initial decorations to set for about 10 minutes. Once firm, pipe a yellow buckle around the band of each cone for that finishing touch. Let them dry completely before serving.