Well, after reading the first post I was all ready to pipe up with red being one of the colors that bass see best, but I guess that is already taken care of!!
Red is the first color to fade from light absorption, but if I remember right, it is not absorbed until after 5 feet or so. I also remember vaguely (but would have to look it up), that red is absorbed more rapidly in clear water than turbid water for some reason.
Another point I think may play a role is that since bass can best see the colors in the green and red-orange spectrum, I think they can also more easily see the red contrast to the green in a watermelon red lure. I think this also is true with black (which they can likely easily see, though the “color” black is never usually discussed in color articles).
I am curious also to the statement that black neon catches the most bass on the river. In my own observations over the past two years, I have tried black neon and watermelon red tubes and brush hogs back to back in the same areas at the same time, and most often, especially in the summer, the watermelon far out caught the black neon. Only in the spring and fall has the black been as good for me. I have thoeries this may have to do with the colors of the crawfish at these times of year, couple with the different angles of the sun penetration into the water and the differences in typical water clarity.
I also feel the watermelon/green pumpkin/pumkin colors present a natural appearance of camoflage to the fish, and don’t let the fish really examine the bait fully. It just presents cues of a meal, without letting the bass examine the presentation for flaws in realism as well.
Great topic!!