BLESS THIS MESS
Spray the bottom of 6 inch cake pans with baking spray. Make the first box cake mix according to the package directions and divide the batter evenly into 3 bowls.
Color one bowl red, one yellow and the last orange. The gel food coloring should have some indication on how much to use, but the batter should be very bold in color.
Bake according to directions on the box. You’ll know that the cakes are done when they spring back when lightly touched. Allow the cakes to cool on a wire rack for 5 minutes before removing it carefully from the pan.
Once the pans have cooled, wipe them clean and spray them with baking spray or grease and flour them well. 1. Make the second box cake mix and again divide batter into 3 bowls.
Color one green, one blue, and the last purple. Bake according to directions on the box. Allow the cakes to cool on a wire rack for 5 minutes before removing it carefully from the pan. Allow all of the cakes to cool completely.
Level all the cake layers using a sharp knife or a cake leveler.
Make icing and create 1/2 cup of each rainbow color icing and set aside.
Add a generous portion of white frosting between each layer. Cover the cake with a very thin layer of frosting to seal in all the crumbs and use an offset spatula to evenly spread that layer out.
Chill cake for 15 minutes to 1 hour.Pipe a thick white line of frosting along the bottom of the cake. Pipe red line of frosting on top of white line. Continue adding lines of frosting in orange, yellow, green and blue.
Frost the top of the cake as well and spread it smooth with a long metal spatula and decorate as desired.