Place clean and dry ring in 3rd prepared pan. Pour yellow-colored batter in outer and white colored batter in the middle section and red-colored batter in the center section. Fill sections halfway.
Preheat oven to 350°F.
Prepare 3 boxes white cake mix following package instructions; divide in thirds.
Reserve 1 portion batter white. In second portion, gently stir in Red-Red Icing Color to desired shade (use clean toothpicks to transfer color from jar to batter). Repeat with Lemon Yellow and Golden Yellow Icing Colors to color second portion.
Place Batter Dividing Ring in the first prepared 9 x 1 1/2 in. pan. Pour red-colored batter in outer section and yellow-colored batter in the middle section and white in center section. Fill sections halfway.
Remove ring from pan by carefully lifting straight up on handles. Rinse and completely dry ring.
Place ring in 2nd prepared pan and in the first prepared 9 x 1 1/2 in. pan. Pour white batter in outer section and red-colored batter in the middle section and yellow-colored batter in center section. Fill sections halfway.
Remove ring from pan as before. Bake and cool cakes following recipe directions. Remove and stack cakes.
DO NOT PUT DIVIDING RING IN OVEN.
Bake and cool diploma cookie using roll out cookie recipe. Prepare Color Flow Icing, divide and tint a portion red, reserve white. Using tip 3 and full strength white color flow icing, outline cookie. Flow in with thinned icing in a cut parchment bag. Let dry. Using tip 6 and full strength red color flow icing, pipe ribbon and bow. Let dry and set aside.
Prepare buttercream icing, divide and tint portions red and yellow, reserve white. Assemble cake layers on foil-wrapped cake board, spreading thin layer of buttercream icing between layers. Spatula ice cake smooth. Imprint medium star cutter on cake sides. Using tip 3 and yellow icing, outline stars. Using tip 16 fill in with stars. Using tip 6 and red icing, pipe top and bottom bead borders. Position cookie on cake top, securing with a swirl of buttercream icing.
*Combine Lemon Yellow and Golden Yellow Icing Colors for yellow shown