I supposed when Valhalla was announced at Blackpool Please Beach you thought that the name would change eventually to something along the lines of "Dr. Pepper Reversing Boat Ride" just to fit the park's theming trends.
Alton Towers has the right to be a bit different with their next attraction. Oh and by the way, Atlantis, is not called Atlantis as that is the name of the area of Thorpe Park where it is being built. And before all you peeps who think it's called Odyssey get all excited, think again. It's called Atlantis: The Ride. As stated by people in the know - the ride title is quite unimaginative.
Secondly, due to the scattering of light in the atmosphere, the sky is always changing colour. Air is colourless. Therefore you cannot say that the ride is themed to the sky - it might not be - it is more likely to be themed to the other side of the story - rushing air speeding arounf the place. Just my opinion...