I have to agree with some of the previous posts.
The colour palette, to me, does seem quite similar to AoS. Which was a bit too gray for my taste, but hey, it might look differant on an actual DS.
Music too I thought was "gray" if you get my meaning, kind of indistinguishable and uneventfull, Yamane could do alot better.
EDIT: After watching the trailer a few more times, the music isn't all that bad, grew on me I guess.
Also, I hope they don't use the Magnes glyph TOO much. It seemed like they used it ALOT in the demo, especially with bosses. It's ccol and all, but I don't want to be doing it all the time. (On the other hand it is kind of a cool throwback to Simon's whip swinging in a way).
I'm coming across as too negative though, I generally liked what I saw, and I thought the opening was really excelent. The game also seems to have alot more storytelling, which is good.
Oh and complaining about woman protagonists who aren't being tied to railroads by men with curly mustaches is sexist.