[Greg McKaskle]

It is a bit difficult to talk about these with no images.

The Threshold operation compares pixel values and returns a Boolean masked image. The image only has two values, 0 and nonzero. Vision Assistant and other tools will typically display this with two colors. The colors have no relation to any original colors.

If the threshold is masking out the wrong color, change the hue. I attached an approximate hue wheel from a LV panel. I highly recommend you open up Vision Assistant and experiment with an image and the color threshold block.
The block supports RGB, and various HS(IVL) versions.

There was a question about switching to RGB, and that will be a bit faster to process, but I think you'll find it far less accurate for specifying ranges. But the cool thing about Vision Assistant is that you can experiment, discover things, and ask questions.

Greg McKaskle