@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int col) {
Component comp = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, col);
EditTableDataModel model = (EditTableDataModel)table.getModel();
if (model.isChanged(row)) {
comp.setBackground(Color.gray);
} else {
if (!isSelected) {
comp.setBackground(null);
}