After seeing the comparison of the supposedly more accurate 2003 DVD to the 2008 Sleeping Beauty I'm a bit befuddled.
There is a shot of a robin that is more pink (in 2003), and some other colors that just seem bizarre.
I considered getting the 2003 disc and using it as a guide for color correcting the 2008 SE, but once again I find the new version to be an improvement (I can't speak of the BD).
Unfortunately, I think there is no right answer.
First we have to consider that the animators had no technology to provide the kind of color fidelity we have now. So what ever they chose, to some degree, was them settling.
There is no doubt some color change happened in the photography process and the animators accounted for it. To my eye, though, a stronger factor appear to be that the 2003 DVD is suffering from aging of the film stock.
I suspect the right answer lies somewhere between the two.
Btw, I now have at least 3 things I'd like to share if I can ever figure out how/where to put them.