Hi @jeremydouglass 
Yeah, that is also sort of what I am asking. I do not have a specific color distance metric yet, and I’m asking advice on that topic as well. I managed to integrate closest color in both RGP + HSB colorspace into @kll example and it is working decently, but I wondering if there is better way to do it? I don’t care about what is closer to they human eye, just as long as the colors of my beads are tracked consistently through the camera + script.