import java.awt.BorderLayout;
import java.awt.Color;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main {
public static void main(String args[]) {
JFrame f = new JFrame("JColorChooser Sample");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JButton button = new JButton("Pick to Change Background");
Color myBlack = new Color(0,0,0); // Color black
// Color myWhite = new Color(255,255,255); // Color white
// Color myGreen = new Color(0,200,0); // A shade of green
button.setBackground(myBlack);
f.add(button, BorderLayout.CENTER);
f.setSize(300, 200);
f.setVisible(true);
}
}