Character appearance - colour palettes?
How do you guys choose a character's appearance and their colour palette? I'm trying to decide the colours for a certain character and I'm coming up with nothing :C I can't even choose her hair colour. I usually get an idea for hair colour automatically, but for this character whatever colour I choose is too similar to the other characters. Can you guys tell me what methods you use to choose colours for a character?
More info on my chara:
Name: Satsuki Umeda
Role: Best friend of FMC
Personality/Bio: Happy-go-lucky, romantic, superstitious, no common sense but good at studies, pretty and popular in school, chased by boys, gets dumped every 2 months, low self esteem
She's kind of inspired by the character Minorin from Toradora.
Hairstyle: Mostly ponytail, short, straight
I'm willing to choose non-natural colours too. I'm leaning towards pink but it doesn't seem to suit her. The other characters: Mei (FMC) has red/orange hair (may change) and the mean best friend Ume has dark blue hair.
If you want me to draw them, I'll try my best and show you guys!!
Thank you!! :)