I would keep an eye on Ebay! I was on there before when I had my old G8 that had cloth seats looking for leather. They had several sets of seats, you just have to check the pictures out really good, because alot of times they are taken out of wrecked cars. :-/
It will cost you some more, but since (i believe) the GXP is not embroidered into the red inserts, you could have an upholstery shop stitch the two seat covers together...(you know what I mean?)
Those are GT seats. I already scored a set of red/black GXP seats. Trying to decide if I want to sell or keep my all black GXP seats.