code: def high_density_objs(row_obj: CityInfo) -> dict:
      
      opts = dict()
      if float(pop_density(row_obj)) > EXTREMELY_HIGH_POULATION_DENSITY:
          opts[tf.TableFormatter.ROW_OPT_TEXT_COLOR] = tf.TableColors.TEXT_COLOR_RED
      return opts
docs: Color rows with extremely high population density red.