class_docstr: Generate color
class_docstr_tok: ["Generate","color"]
code: def __init__(self):
      self.latest_auto_color = -1
  
file_path: adtk/src/adtk/visualization/_visualization.py
imports: import matplotlib.pyplot
  import numpy
  import pandas
  from pandas.plotting import register_matplotlib_converters
  from ..data import to_events, to_labels, validate_events
label_desc: Use image node_id 1 to create a new ColorGenerator object  with example: obj = ColorGenerator()