Pink Panther: To pink panther someone is to boil oil and pour onto ones face. Their instant reaction to grab their face pulls all of their skin off leaving them looking like the pink panther. Commonly used in prison with baby oil.
Pink hair looks warm to some people, but it doesn't make somebody a warm person, any more than wearing outlandish outfits or talking at a certain decibel level makes somebody a warm person. Anybody can be warm in a crowded bar where everyone is looking, or cameras are watching.
Pink hair doesn't make cold eyes something other than what they are, and it doesn't turn spades into rakes. Having a colorful outfit and hair never made somebody a colorful person, since any plain person can die their hair any color they want to to make thmself look and sound more interesting (or goofy, or serious, or anything else) than they really are (to boost their reputation).