Whip butter: In a large bowl, mix 1/2 cup butter with a hand mixer until light and fluffy, about 1 minute.
Add sugar and liquids: Add 2 cups of the powdered sugar, 1 teaspoon vanilla and 3/4 teaspoon almond extract. Mix well. Add the remaining 2 cups powdered sugar, optional food coloring, and 3 Tablespoons milk. Mix well. If you are piping, 3-4 Tablespoons of milk is perfect. If you are just spreading the frosting add the extra Tablespoon to thin it out just a little.
Frost cookies: Decorate cookies with frosting.
Notes
Frosting: Feel free to mix in 2-4 ounces of softened cream cheese with the butter for a softer tangier frosting.Storage: Store in the refrigerator in a covered container up to 1 week.