def METHOD_NAME(self):
    labels = Labels([(0, 0, 0), (0, 1, 1), (0, 2, 2)],
                    vdims='color').opts(color='color')
    plot = mpl_renderer.get_plot(labels)
    artist = plot.handles['artist']
    self.assertEqual([rgb2hex(a.get_color()) for a in artist],
                     ['#440154', '#20908c', '#fde724'])