Sup man... im feel really bad for you... i have a solid red also but i dont have any defects of purplish or watever ur saying.... i live on a small island and the weather here sucks not to mention the harsh salt conditions ur car is put through... but even then no purple haze... the only complaint to it was that there was fish eye reaction on the roof... but they gave me a discount and i didnt really care much after that...
all im gonna say is hang in there i know ur frustrated and u feel like batting the z cuz of the frustration ur going through but dont worry in the end itll be worth it...
here are pics of my z... first is recent but the pic is high def taken by my good friend but over saturated from wat people say... the second is with a regular camera i took... still looks like that bright shiny and red... no purple...