des cheveux multicolores.
Photo couleur
His hair is "ses cheveux" (masc.) in French.
Smurf (the blue-coloured comic-book characters) is "un Schtroumph" in French.
a hair bun is 'un chignon' in French.
Long hair is "les cheveux longs" in French.
ginger hair is 'les cheveux roux' in French.
'messy hair' in french is 'cheveux en désordre'
You can say "Il a des cheveux gris" in French to mean "He has gray hair."
les cheveux
Coiffeur
mes cheveux
les cheveux