public void paintPalette(Graphics g) {
    boolean leftToRight = MetalUtils.isLeftToRight(frame);

    int width = getWidth();
    int height = getHeight();

    if (paletteBumps == null) {
      paletteBumps =
          new MetalBumps(
              0,
              0,
              MetalLookAndFeel.getPrimaryControlHighlight(),
              MetalLookAndFeel.getPrimaryControlInfo(),
              MetalLookAndFeel.getPrimaryControlShadow());
    }

    Color background = MetalLookAndFeel.getPrimaryControlShadow();
    Color darkShadow = MetalLookAndFeel.getPrimaryControlDarkShadow();

    g.setColor(background);
    g.fillRect(0, 0, width, height);

    g.setColor(darkShadow);
    g.drawLine(0, height - 1, width, height - 1);

    int xOffset = leftToRight ? 4 : buttonsWidth + 4;
    int bumpLength = width - buttonsWidth - 2 * 4;
    int bumpHeight = getHeight() - 4;
    paletteBumps.setBumpArea(bumpLength, bumpHeight);
    paletteBumps.paintIcon(this, g, xOffset, 2);
  }
  protected void createButtons() {
    super.createButtons();

    Boolean paintActive = frame.isSelected() ? Boolean.TRUE : Boolean.FALSE;
    iconButton.putClientProperty("paintActive", paintActive);
    iconButton.setBorder(handyEmptyBorder);

    maxButton.putClientProperty("paintActive", paintActive);
    maxButton.setBorder(handyEmptyBorder);

    closeButton.putClientProperty("paintActive", paintActive);
    closeButton.setBorder(handyEmptyBorder);

    // The palette close icon isn't opaque while the regular close icon is.
    // This makes sure palette close buttons have the right background.
    closeButton.setBackground(MetalLookAndFeel.getPrimaryControlShadow());

    if (MetalLookAndFeel.usingOcean()) {
      iconButton.setContentAreaFilled(false);
      maxButton.setContentAreaFilled(false);
      closeButton.setContentAreaFilled(false);
    }
  }