Stroking or Filling with a Color

 // Use a predefined color.
 g2d.setColor(Color.red);
 drawShape(g2d);
     
 // Use a custom color.
 int red = 230;
 int green = 45;
 int blue = 67;
 g2d.setColor(new Color(red, green, blue));
 drawShape(g2d);