do you mean like the Rhyno on the Innova website? with the purpley swirl on the green disc? b/c I have seen that on alot of discs and I don't think it is a "dye job" but it might be...
They look similar to that except that the dye color is more similar to the plastic color. That's why I'm inclined to believe that it's not a dye, so I'm curious as to the cause of it. It's also happened in two discs that I've seen (williethekid's Rhyno and my Orc), so it is most likely something in the mixing of Champion plastic now, but I'm not sure. Dave?