code: def test_color_shorter_sequence(self, xyz_levels) -> None:
      x, y, z, levels = xyz_levels
      colors = ["blue", "green"]
      cr = from_contour(x, y, z, levels, line_color=colors)
      assert cr.line_renderer.data_source.data["line_color"] == (
          "#0000ff",
          "#00407f",
          "#008000",
      )
  
imports: from __future__ import annotations
  import pytest
  from typing import TYPE_CHECKING
  import numpy
  from bokeh.plotting.contour import FillData, LineData, contour_data, from_contour
label_desc: Use image node_id 8 for calling the Test_from_contour obj's underlying member method code with example usage: obj.test_color_shorter_sequence(xyz_levels) without return types