Pics 4 and 5 look brighter and have more "tear drops" which I like on clowns. I prefer a more reduced pattern though and some people like more busy animals.

Keep in mind that color depends on lighting and what camera they were using also, so not all photos depict the right color and not all monitors display color well.

Brighter animals tend to not brown out as much, but it can depend on the genetics behind the animal too. If either breeder has a gallery with pics of the adults that produced these babies, that will tell you a lot.

I would mainly pick based on pattern since color is so unpredictable.