Prepare the batter of your choice and set aside. Put light cocoa powder in one bowl and dark cocoa powder in another bowl. Scoop about 2 tablespoons of the batter into each bowl and stir it together. Then fill a piping bag with the light mixture, and another piping bag with the dark mixture.
Squeeze thick drops of the light cocoa mixture onto a sheet pan lined with a piece of parchment paper, making sure to leave plenty of space between the drops. Now line the light drops with the dark cocoa mixture and make squeeze small drops into the spaces between the light drops.
Put the pan in a preheated oven set to 350°F and cook for 2 minutes. Remove the pan from the oven and pour the rest of the batter over the drops and smooth it out. Bake for another 18 minutes at the same temperature, and allow the cake to cool after removing it from the oven.
Flip the cake upside down, remove the parchment paper, and cut into 3 wide strips.
Stir the cream cheese, sugar, and orange syrup together with a hand mixer. Dissolve the gelatin sheets in warm milk, and then add the mixture to the cream. Stir in the whipped cream and then mix in the candied oranges.
Fit a 7 inch springform pan with your cake base and line the walls with the leopard strips. Pour the cream cheese mixture over the cake base and smooth it out.
Create the same leopard spot patterns on the surface of the cake, like you did on the parchment paper. This time, however, do it with melted milk and dark chocolate, rather than cocoa powder. Refrigerate the cake overnight to allow it to set.