I have found a great polish to apply to any color. I had a 2000 GTP, black, and I now have a 2004 GTP, black. It's called Zaino Bros and only can be orderd from the internet, not in stores. Every coat that you apply makes your paint look thicker, like looking through glass. You can see pictures of some cars with this polish at www.zainobros.com. Check it out! My friend has a white car and it even makes it look 100% better. And the shine last for a long time. I have 3 coats on mine now. Take care of that GTP with this great product!