Preheat oven to 325 degrees. Grease a bundt pan with baking spray.
Mix the cake according to directions on the box.
Remove 1 cup of cake batter and put it in a separate bowl, and repeat with another cup of cake batter.
Use food coloring gel to color one cup of cake batter orange. You will want it to be bold!
Add two Tablespoons of cocoa to the second cup of cake batter. Stir. Add enough food coloring gel to color the batter black.
Pour black cake batter in the bottom of prepared bundt pan. Next, pour white batter over black cake batter layer. No need to stir or swirl. Finally, pour orange cake batter over white cake batter layer. Once again, no stirring!
Bake according to cake mix instructions.
Let cool for about 10 minutes, then remove from pan and cool on a wire baking rack.