I miss the yellow dress but these are nice. I'm not sure about that purple sash though... and maybe MC's hairstyle doesn't really fit the simplicity of her dress? The rest of the ladies look great and you do feel the change in the atmosphere (war, winter etc)
Fun fact: the original, yellow dress's colour scheme was based on a old Halloween costume I once made. For the MC, I wanted something neutral that would look good in scenes with all the other characters and their many different outfit colours. You can see something much closer to the actual dress I made as Melody's Halloween costume in BFF. ^_^
I'm not really sure I see the hair and dress as not matching, but then I suppose if I did I would have designed it differently. I'm glad you like the rest of the ladies though.