Blend2.java

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.*;
import javafx.scene.effect.BlendMode;
import javafx.scene.layout.HBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.*;
import javafx.stage.Stage;

public class Blend2 extends Application {
    @Override
    public void start(Stage stage) {

	Rectangle r = new Rectangle();
	r.setX(50);
	r.setY(50);
	r.setWidth(50);
	r.setHeight(50);
	r.setFill(Color.BLUE);

	Circle c = new Circle();
	c.setFill(Color.rgb(255, 0, 0, 0.5));
	c.setCenterX(50);
	c.setCenterY(50);
	c.setRadius(25);
	c.setBlendMode(BlendMode.MULTIPLY);
	//c.setBlendMode(BlendMode.DIFFERENCE);

	Group g = new Group();
	g.getChildren().add(r);
	g.getChildren().add(c);

        stage.setScene(new Scene(g,120,120));
        stage.show();
    }

    public static void main(String[] args) {
        launch();
    }
}