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Kateyes
Since: Aug, 2020
Gravity-Warrior
Since: Jul, 2023
Gravity-Warrior
Since: Jul, 2023

This is a middle-grade book which was published no later than 2012. I remember a lot of things about it but nothing that shows up on web searches.
There is a girl who moves with her mom to a beach town and she sees ghosts. I can't recall if this is a new ability or not. There are several ghosts, and one is a slightly-older girl who is still wearing the costume she died in- fishnets are involved. This ghost also dyed the protagonist's hair (blue?), which the protagonist ends up liking and at the end of the book, she and a living friend dye their hair "Screaming Sally's Punk-Rock Pink." Also the girl's mother is an artist who does some sort of beach-themed souvenirs.
I don't think it's Saranormal.