g2.setPaint(new GradientPaint(0, 0, new Color(255, 0, 0, 255), height,
height, new Color(150, 0, 0, 255)));
g2.fillOval(0, 0, height, height);
g2.setPaint(new GradientPaint(0, 0, new Color(255, 250, 250, 255),
height, height, new Color(200, 180, 180, 255)));
g2.fillOval((int) Math.round(step), (int) Math.round(step), (int) Math
.round(height - 2 * step), (int) Math.round(height - 2 * step));
g2.setPaint(new GradientPaint(0, 0, new Color(255, 0, 0, 255), height,
height, new Color(150, 0, 0, 255)));
g2.fillOval((int) Math.round(2 * step), (int) Math.round(2 * step),
(int) Math.round(height - 4 * step), (int) Math.round(height