code: def covar_plotter3d_plotly(embedding, rieman_metric, inspect_points_idx,
                             colors, **kwargs):
      
      def rgb2hex(rgb):
          return '#%02x%02x%02x' % tuple(rgb)
      return [ plt_data for idx in inspect_points_idx
               for plt_data in plot_ellipse_plotly(
                  rieman_metric[idx], embedding[idx],
                  color=rgb2hex(colors[idx]), **kwargs) ]
docs: 3 Dimensional Covariance plotter using matplotlib backend.