How do you deal with clients with bad taste?

i got hired by a temp tattoo artists to design this dreadful website he just kept changing his mind on everything and his ideas were really childish he wanted a rainbow website different fonts everywhere just an insane jumble mess which I was trying to get him away from because he was having several problems with his current website which was over 12 years old he liked older styled graphics really crappy and low quality he was really insane