code: def test_plot_epochs_colors(epochs, browser_backend):
      """Test epoch_colors, for compatibility with autoreject."""
      epoch_colors = [
          ["r"] * len(epochs.ch_names)
          for _ in range(len(epochs.events))
      ]
      epochs.plot(epoch_colors=epoch_colors)
      with pytest.raises(
          ValueError, match="length equal to the number of epo"
      ):
          # epochs obj has only 1 epoch
          epochs.plot(epoch_colors=[["r"], ["b"]])
      with pytest.raises(
          ValueError, match=r"epoch colors for epoch \d+ has"
      ):
          # need 1 color for each channel
          epochs.plot(epoch_colors=[["r"]])
      # also test event_color
      epochs.plot(event_color="b")
  
imports: import platform
  import matplotlib.pyplot
  import numpy
  import pytest
  from mne import Epochs, EpochsArray, create_info
  from mne.datasets import testing
  from mne.event import make_fixed_length_events
  from mne.viz import plot_drop_log
label_desc: Use image node_id 4 for calling a global function with example usage: test_plot_epochs_colors(epochs, browser_backend) without return types