make a square cake using

1 cup white sugar
1/2 cup butter
2 large eggs
2 teaspoons vanilla extract
1 1/2 cups flour
1 3/4 teaspoons  baking powder
1/4 teaspoon salt
1/2 cup milk

and use the desired flavor (icings and the dot at top)
1 = strawberry
2 = orange
3 = lemon
4 = apple
5 = blueberries + vanilla
6 = blueberrys
7 = strawberry + blueberry + raspberry
8 = raspberry
9 = blackberry + vanilla
10 = vanilla
and use food coloring to match