Black Tie Macarons

Name: Black Tie Macarons
Ingredients: 90 gr egg whites (about 3); 30 gr granulated sugar; 200 gr powdered sugar; 110 gr almonds; black powdered food coloring (the end color will depend on how much you use); 1/2 cup (100gr) sugar; 2 large egg whites; 1 1/2 sticks (6 ounces) unsalted butter, at room temperature; 2 tsp pure vanilla extract