Leave the rears S3 black.
They look really cocked up if you do them lary.
That colour is a Miurcielago Colour Arancio Atlas Orange....needs 6 coats from memory...lovely though and would defo work on that Leon - great colour that.
Speak to Alex at AKS about a rear disc upgrade if you're bringing attention to the fronts, just balances things out and isn't anywhere as expensive as you think with the new discs replacing the Rs6 ones