code: def _init_colortags(self, textwidget, options):
      textwidget.tag_config("terminal", foreground="#006000")
      textwidget.tag_config("arrow", font="symbol", underline="0")
      textwidget.tag_config(
          "nonterminal",
          foreground="blue",
          font=("helvetica", -12, "bold"),
      )
  
imports: import re
  from tkinter import Button, Canvas, Entry, Frame, IntVar, Label, Scrollbar, Text, Tk, Toplevel
  from nltk.draw.tree import TreeSegmentWidget, tree_to_treesegment
  from nltk.draw.util import CanvasFrame, ColorizedList, ShowText, SymbolWidget, TextWidget
  from nltk.grammar import CFG, Nonterminal, _read_cfg_production, nonterminals
  from nltk.tree import Tree
label_desc: Use image node_id 1 for calling the ProductionList obj's underlying member method code with example usage: obj._init_colortags(textwidget, options) without return types