Retrieve average color of an instance using SAHI+YOLOv8

[natashahrycan]

I am using SAHI with YOLOv8 for instance segmentation on a custom data set. I want to use k-means to classify it later, I have been able to retrieve the area of the instances but I also need the average color of the area covered by the mask. I have tried a previous recommendation on this article, but the answers there suggest functions and attributes that don't exist.

How can I calculate the average color from the information provided in the prediction?