[Greg McKaskle]

I think that you will likely be able to set the S and V values of the target color so that it is pretty good at tracking a gray tote. I'll don't have many images of the gray tote, so I'm not sure what will work for you.

For the images included in the example, Image 18, you can set the Hue to be a wide range, or a bluish range. Set the Saturation to go 0 - 50 and the values to go 0 - 100. That gives a reasonable, but potentially noise mask, but the other metrics tend to clean it up in the images I have.

Feel free to post an image.

Also, while it isn't idea for distant totes, the shape based example intentionally uses high contrast patterns printed on the end of the tote. You can train it for different patterns and adjust the search criteria to get very good tracking once you are somewhat close to the tote.

Greg McKaskle