I can shed some light on this...Before I learned better I would have said that there is no way color could have an independent effect on stability. After getting in with the MVP guy and learning 100% more about the molding of discs than I knew before I now realize that it does have an independent effect. Now I'm not going to provide any support to this whole red dye situation, but each color is a chemical that reacts slightly differently through the inherently touchy process of injection molding. Different melting points, specific heats, and many other factors make this so. For example many of us know that all the FR Axis came out flat except the pinks, which under the exact same conditions cooled with a big dome. The MVP guys told me it was the colorant making the difference.
Now I'm sure there are many here who know way more about molding than the MVP guys....