New Hair Color

I want to dye Rachel's hair again, but I can't pick which color. Should she be......

1. A new shade of blondhttps://i.imgur.com/fHaSCPh.jpg

2. Brunettehttps://i.imgur.com/2WgbuwP.jpg

3. Redheadhttps://i.imgur.com/DsoLbAj.jpg

4. Blackhttps://i.imgur.com/v7ACSP0.jpg

5. Purplehttps://i.imgur.com/1yZActC.jpg

6. Other