That Scott Farrel fellow that wrote the Guns Magazine article sure doesn't get out much. He states that the one thing we can count on is that "All 12 gauge shells are red." There has never been a time that we could rely on color to save us from our inattention. The "yellow 20" is a relatively modern phenomenon meant as a convenience, not a lifesaving measure. I still have 75 red AA 20s that I load and shoot when I am on a nostalgia kick.