如何在JFoenix的进度条上更改颜色

import com.jfoenix.controls.JFXProgressBar;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class ProgressBarExample extends Application {

    @Override
    public void start(Stage primaryStage) {
        JFXProgressBar progressBar = new JFXProgressBar();
        progressBar.setStyle("-fx-accent: #00FF00; -fx-background-color: #000000;");

        StackPane root = new StackPane(progressBar);
        Scene scene = new Scene(root, 200, 200);

        primaryStage.setScene(scene);
        primaryStage.show();
    }

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