I would just buy a good condition pair of midnight blue leather seats. They aren't that hard to find. I even know someone with a pair. I think it would save you alot of effort and money, but that is just my two cents.
And WTF is the "just ask for purple" !?!?

I don't know about your car, but I don't have "purple" leather interior in my SVT.

-Reebs-