Follow instructions on pancake mix box or use your favorite pancake recipe. Pour equal amounts of batter into 6 bowls. Add 5 drops of food coloring to each bowl and stir well to make all rainbow colors. Pour pancake batter onto the griddle or large pan, about 1/4 or 1/3 cup each. When they're all made, stack them in rainbow order. Top with a scoop of Cool Whip and rainbow sprinkles. They're perfect for a birthday breakfast!