code: def editlabel(self, project_id, name, new_name=None, color=None):
          
          data = {'name': name, 'new_name': new_name, 'color': color}
  
          request = requests.put(
              '{0}/{1}/labels'.format(self.projects_url, project_id), data=data,
              verify=self.verify_ssl, auth=self.auth, headers=self.headers, timeout=self.timeout)
  
          if request.status_code == 200:
              return request.json()
          else:
              return False
docs: Updates an existing label with new name or now color.
          At least one parameter is required, to update the label.
  
          :param project_id: The ID of a project
          :param name: The name of the label
          :return: True if succeed