TBH, if you want leather, it's probably best to go after market anyway. VW will force you down the plain black route for a whopping £1,675.00, and the leather isn't exactly what I would call superb quality (well if my MK5 Golf was anything to go by anyway).
Going after market with a UK reputable re-trimming company not only gives you an infinite pallet of colours to choose from, but also options like perforated leather, leather / alcantera mix etc, and when I investigated doing this for my Scirocco, it also worked out cheaper than the factory option !