def METHOD_NAME(self):
    labels = Labels([(0, 0, '#000000'), (0, 1, '#FF0000'), (0, 2, '#00FF00')],
                    vdims='color').opts(color='color')
    plot = mpl_renderer.get_plot(labels)
    artist = plot.handles['artist']
    self.assertEqual([a.get_color() for a in artist],
                     ['#000000', '#FF0000', '#00FF00'])