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/**
* Found on stack Overflow
*http://stackoverflow.com/questions/7115672/change-jbutton-gradient-color-but-only-for-one-button-not-all
*/

private static class JGradientButton extends JButton {
        private JGradientButton() {
            super("Gradient Button");
            setContentAreaFilled(false);
            setFocusPainted(false); // used for demonstration
        }

        @Override
        protected void paintComponent(Graphics g) {
            final Graphics2D g2 = (Graphics2D) g.create();
            g2.setPaint(new GradientPaint(
                    new Point(0, 0), 
                    Color.WHITE, 
                    new Point(0, getHeight()), 
                    Color.PINK.darker()));
            g2.fillRect(0, 0, getWidth(), getHeight());
            g2.dispose();

            super.paintComponent(g);
        }

        public static JGradientButton newInstance() {
            return new JGradientButton();
        }
    }