OK so I have the Neo Hybrid 2S Ex Snow Series in Infinity White and the silicone has discolored really bad, but this new case they are coming out with will give me the look I want of the bumper but will not turn colors because it is a polycarbonate shell instead of silicone. I will certainly be getting this when it comes out this Friday!
http://www.sgpstore.com/iPhone-4-4S-Case-Linear-EX-Meteor-Series-are-coming-soon
http://www.sgpstore.com/iPhone-4-4S-Case-Linear-EX-Meteor-Series-are-coming-soon