code: def delta_e_cie2000(color1, color2, Kl=1, Kc=1, Kh=1):
      
      color1_vector = _get_lab_color1_vector(color1)
      color2_matrix = _get_lab_color2_matrix(color2)
      delta_e = color_diff_matrix.delta_e_cie2000(
          color1_vector, color2_matrix, Kl=Kl, Kc=Kc, Kh=Kh)[0]
      return numpy.asscalar(delta_e)
docs: Calculates the Delta E (CIE2000) of two colors.