code: def highlight_symbol(x):
      """Themes keras symbols in a summary using rich markup."""
      return f"[color(33)]{x}[/]"
  
file_path: keras/keras/utils/summary_utils.py
imports: import math
  import re
  import shutil
  import rich
  import rich.console
  import rich.markup
  import rich.table
  import tree
  from keras import backend
  from keras.utils import dtype_utils
  from keras.utils import io_utils
label_desc: Use image node_id 5 for calling a global function with example usage: highlight_symbol(x) and returns: str, x, str