code: def get_color_names_list(self, format_strings):
          
          if not format_strings:
              return []
          if not getattr(self._py3status_module, "thresholds", None):
              return []
          if isinstance(format_strings, basestring):
              format_strings = [format_strings]
          names = set()
          for string in format_strings:
              names.update(self._formatter.get_color_names(string))
          return list(names)
docs: Returns a list of color names in ``format_string``.
  
          :param format_strings: Accepts a format string or a list of format strings.