Ugh. And Disney trying to retcon her dress to being blue so it will fit their marketware for her when you can clearly see it was silver/crystal white.
It's not that it's the process they used to do the 4K conversion. Obviously the original was done by hand frame by frame but the conversion was global. That's why I thought of it because the pallet/contrast/lighting changes they've done with the version 8 update are global rather than specific to the problem they were trying to address (which I guess was how dark it in in the Underdark and other indoor areas). What they should do is return the colors to version 7 and then go in and actually re-work those areas to get the effect they want and leave the global settings alone.