Oh wow, those are adorable! I would have trouble too!
I personally adore purple/blue/pink colour schemes, so my personal preference is number 4.
But number 2 is probably your best bet!
It's a touch call... I like the darkwe look on the body middle option but yeah, green scarf is probably the better combo.
3 for me. They're all adorable!
I like the green and the blue
Separate names with a comma.