JavaFX Text change position and color by Button

import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.geometry.Pos;
import javafx.scene.control.Button;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Pane;
import javafx.scene.layout.BorderPane;
import javafx.scene.text.Text;
import javafx.scene.control.RadioButton;
import javafx.scene.control.ToggleGroup;
import javafx.scene.paint.Color;

public class Main extends Application {
   protected Text text = new Text(50, 50, "demo2s.com");

   @Override // Override the stage method in the Application class
   public void start(Stage primaryStage) {
      HBox paneForButtons = new HBox(20);
      Button btLeft = new Button("<=");
      Button btRight = new Button("=>");
      paneForButtons.getChildren().addAll(btLeft, btRight);
      paneForButtons.setAlignment(Pos.CENTER);
      BorderPane pane = new BorderPane();
      pane.setBottom(paneForButtons);/*  w  w w  .j  a v a  2 s.  c o m*/

      HBox paneForRadioButtons = new HBox(20);
      RadioButton rbRed = new RadioButton("Red");
      RadioButton rbYellow = new RadioButton("Yellow");
      RadioButton rbBlack = new RadioButton("Black");
      RadioButton rbOrange = new RadioButton("Orange");
      RadioButton rbGreen = new RadioButton("Green");
      paneForRadioButtons.getChildren().addAll(rbRed, rbYellow, 
         rbBlack, rbOrange, rbGreen);

      ToggleGroup group = new ToggleGroup();
      rbRed.setToggleGroup(group);
      rbYellow.setToggleGroup(group);
      rbBlack.setToggleGroup(group);
      rbOrange.setToggleGroup(group);
      rbGreen.setToggleGroup(group);

      Pane paneForText = new Pane();
      paneForText.setStyle("-fx-border-color: black");
      paneForText.getChildren().add(text);
      pane.setCenter(paneForText);
      pane.setTop(paneForRadioButtons);

      btLeft.setOnAction(e -> text.setX(text.getX() - 10));
      btRight.setOnAction(e -> text.setX(text.getX() + 10));

      rbRed.setOnAction(e -> {
         if (rbRed.isSelected()) {
            text.setFill(Color.RED);
         }
      });

      rbYellow.setOnAction(e -> {
         if (rbYellow.isSelected()) {
            text.setFill(Color.YELLOW);
         }
      });

      rbBlack.setOnAction(e -> {
         if (rbBlack.isSelected()) {
            text.setFill(Color.BLACK);
         }
      });

      rbOrange.setOnAction(e -> {
         if (rbOrange.isSelected()) {
            text.setFill(Color.ORANGE);
         }
      });

      rbGreen.setOnAction(e -> {
         if (rbGreen.isSelected()) {
            text.setFill(Color.GREEN);
         }
      });

      // Create a scene and place it in the stage
      Scene scene = new Scene(pane, 450, 150);
      primaryStage.setTitle("java2s.com");
      primaryStage.setScene(scene);
      primaryStage.show();
   }
}