Meanwhile, in 2-quart saucepan, mix egg yolks and 2/3 cup sugar. Mix in 3 tablespoons lemon juice, the butter and lemon peel. Heat over medium-low heat, stirring constantly, until mixture thickens. Refrigerate 30 minutes. Spread over lemon filling to within 1 inch of edge. Drizzle reserved blended raspberries over lemon curd, and swirl using toothpick. Refrigerate 1 hour before serving. Garnish as desired. Cover and refrigerate any remaining pie.