its called nautical blue, sometimes nautilus blue for what ever reason... and the paint code is TED48.
you have several dif, you can have a standard 172 spoiler which also comes on dynamique models which is flat and finishes off the boot lid nicely, come painted as well so look out on here or on ebay for that.
then there is the "cup" spoiler which is a little more racey and better looking in my opinion... like this
and if your really after a racey look there is a v6 spoiler, check out a pic of a v6 clio on google or on here for that, also fitted on clio trophies if you wanna see it on summat more like our style.
hope this helps
jamie