code: def _set_all_axis_color(self, axis, color):
          
          for prop in ['ticks', 'axis', 'major_ticks', 'minor_ticks', 'title',
                       'labels']:
              prop_set = getattr(axis.properties, prop)
              if color and prop in ['title', 'labels']:
                  prop_set.fill = ValueRef(value=color)
              elif color and prop in ['axis', 'major_ticks', 'minor_ticks',
                                      'ticks']:
                  prop_set.stroke = ValueRef(value=color)
docs: Set axis ticks, title, labels to given color