protected void installDefaults() {
   Color defaultGridColor = UIManager.getColor("Table.gridColor");
   Color defaultForegroundColor = UIManager.getColor("Table.foreground");
   Color defaultBackgroundColor = UIManager.getColor("Table.background");
   Border defaultBorder = UIManager.getBorder("Table.scrollPaneBorder");
   Color defaultSelectionForeground = UIManager.getColor("Table.selectionForeground");
   Color defaultSelectionBackground = UIManager.getColor("Table.selectionBackground");
   Color defaultFocusCellForeground = UIManager.getColor("Table.focusCellForeground");
   Color defaultFocusCellBackground = new Color(153, 153, 204);
   Font defaultFont = UIManager.getFont("Table.font");
   Border defaultGridBorder = UIManager.getBorder("Table.border");
   InputMap inputMap = (InputMap) UIManager.get("Table.ancestorInputMap");
   if (!installed) {
     UIManager.getDefaults().put("Grid.gridColor", defaultGridColor);
     UIManager.getDefaults().put("Grid.foreground", defaultForegroundColor);
     UIManager.getDefaults().put("Grid.background", defaultBackgroundColor);
     UIManager.getDefaults().put("Grid.selectionForegroundColor", defaultSelectionForeground);
     UIManager.getDefaults().put("Grid.selectionBackgroundColor", defaultSelectionBackground);
     UIManager.getDefaults().put("Grid.focusForegroundColor", defaultFocusCellForeground);
     UIManager.getDefaults().put("Grid.focusBackgroundColor", defaultFocusCellBackground);
     UIManager.getDefaults().put("Grid.border", defaultGridBorder);
     UIManager.getDefaults().put("Grid.font", defaultFont);
     UIManager.getDefaults().put("Grid.scrollPaneBorder", defaultBorder);
     UIManager.getDefaults().put("Grid.ancestorInputMap", inputMap);
     installed = true;
   }
   Color foregroundColor = grid.getForeground();
   Color backgroundColor = grid.getBackground();
   Font font = grid.getFont();
   Border border = grid.getBorder();
   Color gridColor = grid.getGridColor();
   Color selectionForeground = grid.getSelectionForegroundColor();
   Color selectionBackground = grid.getSelectionBackgroundColor();
   Color focusForeground = grid.getFocusForegroundColor();
   Color focusBackground = grid.getFocusBackgroundColor();
   if (foregroundColor == null || foregroundColor instanceof UIResource)
     grid.setForeground(defaultForegroundColor);
   if (backgroundColor == null || backgroundColor instanceof UIResource)
     grid.setBackground(defaultBackgroundColor);
   if (font == null || font instanceof UIResource) grid.setFont(defaultFont);
   if (gridColor == null || gridColor instanceof UIResource) grid.setGridColor(defaultGridColor);
   if (border == null || border instanceof UIResource) grid.setBorder(defaultGridBorder);
   if (selectionForeground == null || selectionForeground instanceof UIResource)
     grid.setSelectionForegroundColor(defaultSelectionForeground);
   if (selectionBackground == null || selectionBackground instanceof UIResource)
     grid.setSelectionBackgroundColor(defaultSelectionBackground);
   if (focusForeground == null || focusForeground instanceof UIResource)
     grid.setFocusForegroundColor(defaultFocusCellForeground);
   if (focusBackground == null || focusBackground instanceof UIResource)
     grid.setFocusBackgroundColor(defaultFocusCellBackground);
 }