code: def colors_loading():
      """
      colors_loading allows shapash to load a json file which contains different
      palettes of colors that can be used in the plot
      Returns
      -------
      dict:
          contains all available pallets
      """
      current_path = os.path.dirname(os.path.abspath(__file__))
      jsonfile = os.path.join(current_path, "colors.json")
      with open(jsonfile, "r") as openfile:
          colors_dic = json.load(openfile)
      return colors_dic
  
file_path: shapash/shapash/style/style_utils.py
imports: import json
  import os
  from shapash.utils.utils import convert_string_to_int_keys
label_desc: Use image node_id 1 for calling a global function with example usage: colors_loading() and returns: colors_dic