My fishing partner loaded his spinning reels with it. I tried his outfit a couple of times. To me the stuff seemed kinda stiff for my preference, was not as visible to my eye as I figured it would be, but when used as the terminal leader (6 lb), the gills didn’t seem to be adverse to it.
Red is the first color that disappears underwater, blue is the last. This is in reference to depth. In other words, blue is visible deeper than any other color, and red washes out soonest.