I dutifully bought a green CD pen when the Paint the Edge Green idea got going. I have many green-edged CDs. Perhaps the green edge makes a slight improvement to the sound, but not enough to really matter. What really improved the fidelity of my CDs was replacing my first generation Marantz CD/SACD player with a Sony XA 5400ES. What improved the fidelity a heck of a lot more was routing my Sony through a Mytek Brooklyn Bridge. Of course, the Mytek cannot decode my SACDs but CDs now often sound excellent. BTW, whenever an audio-fool spots one of my green-edged CDs they chuckle.
