The GTS has flared rear fenders and the rear wing is the same color as the body.
I still like the pretty blue though. Can't tell if it's the same blue as mine, looks really close. It's been too long since I've seen it in the sunlight. I also know that several have gotten paint codes from me to paint their 928 the same color.
There is a Cobalt Blue that is just a tiny bit lighter and doesn't have the purple in it like the Iris Blue Metallic.