import java.applet.Applet;
import java.awt.*;

public class p0102 extends Applet {
  Color[]Color16
    ={new Color(  0,  0,  0),new Color(  0,  0,255),
    new Color(  0,255,  0),new Color(  0,255,255),
    new Color(255,  0,  0),new Color(255,  0,255),
    new Color(255,255,  0),new Color(255,255,255),
    new Color(192,192,192),new Color(128,128,255),
    new Color(128,255,128),new Color(128,255,255),
    new Color(255,128,128),new Color(255,128,255),
    new Color(255,255,128),new Color(128,128,128)};

  public void init()
    {
      String str;
      for(int i=0;i<16;i++){
        str=Integer.toString(i);
        add(new Button(str));
      }
    }

  public boolean action(Event evt,Object obj){
    int c=Integer.parseInt((String)obj);
    Graphics g = getGraphics();
    g.setColor(Color16[c]);
    g.fillRect(0,0,size().width,size().height);
    return true;
  }
}