I'd be fine with playing as the female protagonist. I often think they're better designed than their male counterparts.
I do see your meaning here. Ever since 4th Gen, the male protagonists all seem to have blue incorporated into their outfits, and mostly following very samey designs, most likely to make it easier to design new outfits for Ash in the anime, since his outfits have become more heavily resembling the generation's resident male player character. This became even more literal in SM, where in that anime saga Ash literally wears the exact same outfit as the male player, just with the shirt colours inverted and the hat being red instead of black.