Spoon 2 tablespoons of the mango puree into the bottom of eight 3-ounce ice pop molds. Add 2 tablespoons of the strawberry puree to each mold, then top with the remaining mango puree, leaving 1/2 inch between the filling and the top of the mold. Using a small knife, gently swirl the mango and strawberry layers together. Insert wooden ice pop sticks and freeze until solid, at least 4 hours and preferably overnight. Dip the molds in hot water for a few seconds, then unmold the paletas and serve right away.