Looks really good. Silver wheels against the indium grey paint, and in my biased opinion the Pretoria really suits the Mk7/7.5.
We made the same change on our mk7.5, went from the 19" Brescia's to genuine 18" Pretoria wheels (but dark grey in colour) and it improved the ride. The wheels are roughy 1kg lighter per corner, I guess that also helps.
Also with the appalling state of the roads at the moment, hopefully the 18" wheels will last longer.