code: def test_draw_boxes_grayscale():
      img = torch.full((1, 4, 4), fill_value=255, dtype=torch.uint8)
      boxes = torch.tensor([[0, 0, 3, 3]], dtype=torch.int64)
      bboxed_img = utils.draw_bounding_boxes(
          image=img, boxes=boxes, colors=["#1BBC9B"]
      )
      assert bboxed_img.size(0) == 3
  
imports: import os
  import re
  import sys
  import tempfile
  from io import BytesIO
  import numpy
  import pytest
  import torch
  import torchvision.transforms.functional
  import torchvision.utils
  from common_utils import assert_equal, cpu_and_cuda
  from PIL import __version__, Image, ImageColor
  from torchvision.transforms.v2.functional import to_dtype
label_desc: Use image node_id 10 for calling a global function with example usage: test_draw_boxes_grayscale() without return types