Mauser, no the Cajun Red line is not for the fish striking factor. There are many new lures, and even red hooks that are supposed to imitate blood, causing the fish to strike more.
The Cajun Red line is for visibility. There have been many recent studies about how colors are seen under water. We even have a local guy who writes for a newspaper, and also for a couple of outdoor magazines. He has even done his own study on colors.
Red is the first color of the color spectrum that disappears in water. The greens, blues, and yellows, disapear at greater depths, and violet can be seen at the deepest!
as for the Cajun Red line, I think that I am going to try it the next time I load my reels.
Back to the color red, and the blood strike factor, I read an article the other day that seems to think that because the color red actually disapears in shallow water, that is why the blood baits seem to work so well! The red spots on lures, and hooks, are said to look like flashing lights, as the light strikes them under water, enticing the fish to strike.