A friend of mine has the aluminium gold with white strap, and the strap discoloured quite badly. She had bought it from John Lewis and they gave her a refund for the strap, and she got a cheap third-party dusky pink one instead.
Thing is, that strap goes so well with the watch that I'd be loathe to change it for something else. I guess we'll just have to wait and see how it goes. Or I just end up buying a load of them as spares lol. [emoji23]