code: def test_points_rcparams_used(self):
      opts = dict(fig_rcparams={"grid.color": "red"})
      points = Points(([0, 1], [0, 3])).opts(**opts)
      plot = mpl_renderer.get_plot(points)
      ax = plot.state.axes[0]
      lines = ax.get_xgridlines()
      self.assertEqual(lines[0].get_color(), "red")
  
imports: import matplotlib.pyplot
  import numpy
  import pytest
  from holoviews.core.options import AbbreviatedException
  from holoviews.core.overlay import NdOverlay
  from holoviews.core.spaces import HoloMap
  from holoviews.element import Points
  from ..utils import ParamLogStream
  from .test_plot import TestMPLPlot, mpl_renderer
label_desc: Use image node_id 7 for calling the TestPointPlot obj's underlying member method code with example usage: obj.test_points_rcparams_used() without return types