code: def get_color(idx):
      idx = idx * 3
      color = ((37 * idx) % 255, (17 * idx) % 255, (29 * idx) % 255)
      return color
  
file_path: PaddleHub/modules/image/keypoint_detection/pp-tinypose/visualize.py
imports: from __future__ import division
  import math
  import os
  import cv2
  import numpy
  from PIL import Image
  from PIL import ImageDraw
  from PIL import ImageFile
label_desc: Use image node_id 4 for calling a global function with example usage: get_color(idx) and returns: color