Grind Berry Mania, Fruit Tea in a blender or coffee grinder as fine as you can.
Blend all the dry ingredients into bowl for the electric mixer including Berry Mania tea. Add softened butter and mix ingredients together on low speed.
Add egg whites, one at a time, then beat mix in whole egg.
Lightly stir in sour cream, water, and extracts, beating to keep the mixture fluffy.
Grease cupcake pan: 24 cupcake tins (using papers).
Bake at 350F. Bake for 18 minutes, then check every few minutes (5 minute intervals at the most) for cupcakes or layer cakes, 30 minutes for 9"x13".
Frosting: In a standing mixer fitted with a whisk, blend together sugar, butter and matcha. Keep mixer on a low speed until ingredients are blended and then increase speed to medium and beat for another 3 minutes.
Add vanilla and cream and continue to beat on medium speed for 1 minute more, adding more cream if needed for spreading consistency.