In detectron2, how bounding box output by Faster R-CNN can be fill in color what I want?

[Nurungyi]

I am learning detectron2 for using Faster R-CNN.

I could generate the bounding box in my task and I want to fill in bounding box by class with specific color.

I tried to read a document of detectron2 but it is difficult to understand for me.

The below is my code. would you please kindly advise to me?

from detectron2.utils.visualizer import ColorMode
import glob
for imageName in random.sample(glob.glob(os.path.join(test_path, '*.png')), 3):
im = cv2.imread(imageName)
outputs = predictor(im)
v = Visualizer(im[:, :, ::-1],
metadata=train_metadata,
scale=0.8
)
out = v.draw_instance_predictions(outputs["instances"].to("cpu"))
cv2_imshow(out.get_image()[:, :, ::-1])