Another benifit to going with blue is that blue and yellow are polar opposites which is a great color palett.
( Although so is purple depending on which wheel go use... )
You also might just get more and more conflicted the more tips you get at this point.
Like @LilySmash said, the blue one could use some tweaking but that can be done retro-actively if you're subtle.
I'd say go with one and if it doesn't feel right halfway in just have her change outfit within the story. Maybe there is a color wizard or something?
You have a great sense for comedy so I'm sure you will come up with a clever solution ; >