>>46026484This actually makes a lot of sense! While they're in their alter ego forms they change color palettes.
The female defender of Kalos has a red and purple theme while the male one is blue and white, this is mirrored in their everyday outfits.
Shame we never battled them so we can't confirm if they're also flying and dragon specialists, but given that those two types were prevalent in Kalos because of the lore and Sky Battles, it makes sense.