I've yet to hear a picture disc that doesn't sound really noisy, so I avoid them. I tend to agree with the "thinner vinyl" explanation.
I don't have many colored-vinyl discs, but my red vinyl copy of "Yoshimi Battles the Pink Robots" by The Flaming Lips sounds pretty darned good.
I don't have many colored-vinyl discs, but my red vinyl copy of "Yoshimi Battles the Pink Robots" by The Flaming Lips sounds pretty darned good.