how do i change the color for particular segment suppose for example I want to change the color of wall or floor in image how we can do it?

Here is the code that i'm using -
```
import cv2
from detectron2 import model_zoo
from detectron2.engine import DefaultPredictor
from detectron2.config import get_cfg
from detectron2.utils.visualizer import Visualizer
from detectron2.data import MetadataCatalog

im = cv2.imread("./input.jpg")

# Inference with a panoptic segmentation model
cfg = get_cfg()
cfg.merge_from_file(model_zoo.get_config_file("COCO-PanopticSegmentation/panoptic_fpn_R_101_3x.yaml"))
cfg.MODEL.WEIGHTS = model_zoo.get_checkpoint_url("COCO-PanopticSegmentation/panoptic_fpn_R_101_3x.yaml")
cfg.MODEL.DEVICE = 'cpu'
predictor = DefaultPredictor(cfg)
panoptic_seg, segments_info = predictor(im)["panoptic_seg"]
v = Visualizer(im[:, :, ::-1], MetadataCatalog.get(cfg.DATASETS.TRAIN[0]), scale=1.2)
out = v.draw_panoptic_seg_predictions(panoptic_seg.to("cpu"), segments_info)
#print("out",out.get_image()[:, :, ::-1])
cv2.imshow("im",out.get_image()[:, :, ::-1])

cv2.waitKey(0)
cv2.destroyAllWindows()
```