code: def rgb_list_to_hex_bgr(rgb_list):
      r, g, b = rgb_list
      return f"{b:x}{g:x}{r:x}"
  
file_path: NeMo/tools/nemo_forced_aligner/utils/make_ass_files.py
imports: import math
  import os
  import soundfile
  from utils.constants import BLANK_TOKEN, SPACE_TOKEN
  from utils.data_prep import Segment, Token, Word
label_desc: Use image node_id 2 for calling a global function with example usage: rgb_list_to_hex_bgr(rgb_list) and returns: b, g, r