Раскраска таблицы - Java

DefaultTableCellRenderer renderer = new DefaultTableCellRenderer(){
          @Override
          public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column){
              Component cell = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
            for (int i=0; i<=8; i++)
            cell.setBackground(Color.white);
            
             for (int i=0; i<=2; i++)
             for (int j=0; j<=2; j++)
            cell.setBackground(Color.red);
           return cell;   
          }
        };
                
        for(int i=0; i<=8;i++)
            
        {
         if(i<=8)
        Field.getColumnModel().getColumn(i).setCellRenderer(renderer);
        }