The purple ones aren't SI exclusive. They're on the Oakley site as well. The green ones are "SI Infinite Hero". And you'll notice that all the SI exclusive ones have Black Iridium Polarized as opposed to just Black Iridium like the standards.
I did notice that. i did not believe that the infinite hero were "si exclusive" I was saying that i wonder if they did not do the "SI infinite hero" on the fuel cells due to they multicams that have already been done.