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.