Hugh Hefner unimpressed by wife's new brunette 'do: 'When's it going back to blonde?'

Gentleman really DO prefer blondes… well, at least Hugh Hefner does.

Hugh's wife Crystal Harris decided to swap her platinum blonde locks for a shade of brunette, and her 87-year-old hubby was not impressed!

Crystal said: "He gave me a hard time at first! I came home and said, 'Hef, how do you like my hair?' and he said, 'When's it going back to blonde?' I may go a tiny bit lighter as it grows out."

Or she may just start to gradually change it now?! Insta-pics of the Playboy model show she's snuck a few blonde highlights and hair extensions into the new 'do…

She'll be back to platinum in no time!

In pics: Celebrity hair hits and misses