I think a darker shade of blue would have worked better for the track with this retheme. Given the major refurb with Nemesis, it would have been nice to see Air's track given a lick of paint too, so the area feels new once more.
Saying that at least Air's track has been given a jetwash. They could have left it as a mucky mess!
Not a fan of the portal in those pictures. Will reserve full judgement until it's all complete and open to the public, although seeing rivets where they've attached the metal panels to the frame is somewhat distracting.