code: def test_color_config(self):
      text = self.text
      eq = self.assertEqual
      colorizer.color_config(text)
      # Uses IDLE Classic theme as default.
      eq(text["background"], "#ffffff")
      eq(text["foreground"], "#000000")
      eq(text["selectbackground"], "gray")
      eq(text["selectforeground"], "#000000")
      eq(text["insertbackground"], "black")
      eq(text["inactiveselectbackground"], "gray")
  
imports: from idlelib import colorizer
  from test.support import requires
  import unittest
  from unittest import mock
  from idlelib.idle_test.tkinter_testing_utils import run_in_tk_mainloop
  from functools import partial
  import textwrap
  from tkinter import Tk, Text
  from idlelib import config
  from idlelib.percolator import Percolator
label_desc: Use image node_id 3 for calling the ColorConfigTest obj's underlying member method code with example usage: obj.test_color_config() without return types