Given the following code which has two buttons that are displayed on
the applet, but only one is enabled at a time.(and producing the
desired colours) Buttons are turned on or off using the setEnabled()
method: What would I need to add to have three colours red,green,and
blue??

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import java.awt.*;
import java.awt.event.*;
import java.applet.*;

public class But2 extends Applet implements ActionListener
{
    Button butRed, butGreen;
    Color red = Color.red;
    Color green = Color.green;
    Color current = red;


    public void init()
    {
	butRed = new Button("Red");
	butRed.setEnabled(false);
	butRed.addActionListener(this);
	butGreen = new Button("Green");
	butGreen.addActionListener(this);
	add(butRed);
	add(butGreen);
	current = red;
    }
    
    public void actionPerformed(ActionEvent e)
    {
	String butName = e.getActionCommand();
	
	if("Red".equals(butName))
	    {
		butRed.setEnabled(false);
		butGreen.setEnabled(true);
		current = red;
	    }
	if("Green".equals(butName))
	    {
		butRed.setEnabled(true);
		butGreen.setEnabled(false);
		current = green;
	    }
	repaint();
    }

    public void paint(Graphics g)
    {
	g.setColor(current);
	g.fillRect(100,50,200,100);
    }
}

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Thanks.