Should do that at the store next time. Re-arrange them to have red white and blue Bettas next to each other.
The female in the first pic is also the female in the 4th pic. Shes so cool with her rainbow of colors!
Be careful that they don't pick on the frog. Putting a frog in with bettas is kind of a hit-or-miss thing. It can also be hard to make sure the frog gets enough food, so you may have to hand-feed it if you notice it getting skinny.