Java Swing - 如何更改JLabel背景和前景色

import java.awt.Color;

import javax.swing.JLabel;
import javax.swing.JOptionPane;

public class Main {
  public static void main(String[] args) {
    
    JLabel label = new JLabel("Full Name :", JLabel.LEFT);
    
    label.setOpaque(true);
    label.setForeground(new Color(150, 150, 25));
    label.setBackground(new Color(50, 50, 25));
    
    
    JOptionPane.showMessageDialog(null, label);
    
  }
}