i figured it would've been more saturated considering technicolor's usually pretty bright and i've seen an ib tech print of song of the south that has some superb colors, but i guess cinderella's just a movie with duller colors.
Actually this discussion comes up a lot! The picture will not look dull when you watch it in a darkened cinema. But when watching at home in a brightly-lit room it will, and for this reason the convention with digital conversions is to pump up the saturation. For the Bluray comparison I actually gave it a 10% saturation boost... but that's mostly because I couldn't be bothered finding the black level that didn't erase the dark details (which in itself will boost the saturation a bit). That said I think it needs a bit of a boost for release, but I wouldn't pump it all the way up to the levels in Aladdin. You can actually see from the trailer that there is a difference between BATB and Aladdin:
The ballroom scene is probably the most colourful scene of the whole movie, whereas Aladdin has lots of really bright colourful scenes (same with Lion King). Keep in mid of course that the trailer isn't representative of how a print will necessarily look, however the comparisons between the films should be valid.
Here's the ballroom scene from the trailer (probably the most colourful scene in the whole film):

And a comparison from Aladdin... this is one of Aladdin's "less colourful" scenes:

Belle:

Jasmine:

And then there's other things like Aladdin has bright blues and orange/reds in the "dark"/night scenes like this:

Whereas there's nothing like that in Cinderella or any other of the older classics, and it has lots and lots of really bright/colourful scenes like this:

And only Lion King matches that.
The big difference between film and colour printing is that there's no black... with CMYK printing you can produce an image made using Cyan, Magenta, Yellow, and Black colour inks. If the colours fade over time the image will become less saturated. However that isn't the case with film which only has CMY layers and no black, meaning that no matter how much the film fades, once you set your black level and your white level you have the correct saturation as the colour can't fade separate to the luminance.