How can I change gray hair into?

pink? My donkey wants me to dye his hair pink. I tried to talk him out of it but you know donkeys.How can I change gray hair into?
yeah, my donkey wanted to do the same thing but he wanted to dye his hair purple and red, i thought he was out of his mind but then i realized that it was to impress a female donkey, lol.





but what i did was feed him purple and red lolly pops until he turned purpple and red.





now i have tree donkeys.How can I change gray hair into?
i would use a good waterbased (safe) dye. from a hobby store. the type they use to dye t-shirts.
Explain to him it will be a long session in the hairdressers lol. Thats what put me off pink hair.
dye it