Disabling generated buttons

I defined the following class:
    private enum Colours {
        Blue(Color.BLUE),
        Red(Color.RED),
        Orange(Color.ORANGE),
        Yellow(Color.YELLOW),
        Green(Color.GREEN),
        Cyan(Color.CYAN),
        Magenta(Color.MAGENTA),
        Brown(new Color(0x9C, 0x5D, 0x52)),
        ;

        private final Color value;

        Colours(Color value) {
            this.value = value;
        }

        public Color value() {
            return value;
        }
    }

I use it to add some (Swing) buttons:
        for(int i = 0; i < Colours.values().length; ++i) {
            final Colours colour = Colours.values()[i];

            JButton jButton = new JButton("" + colour);

            add(jButton, gbc);
            jButton.addActionListener(new ActionListener() {
                    public void actionPerformed(ActionEvent e) {
                        checkColour(colour);
                    }
                });
            gbc.gridx++;
            if( gbc.gridx == 3 ) {
                gbc.gridy++;
                gbc.gridx = 0;
            }
        }

Those buttons are used to select a colour. But when the wrong colour
is selected I want to disable all the buttons for half a second.
(Otherwise people could just click very fast at random.)
How would I do this?

--
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof