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Elisabeth Moss

Jamie McCarthy/WireImage; Mr Photoman / Splash News

Maybe it's not true that blondes have more fun.

Mad Men star Elisabeth Moss has returned to her roots, stepping out to see a movie Monday as a brunette once more.

The 30-year-old debuted her newly platinum blond locks at a movie premiere in August.

"I wanted to do something really different," she told Us Weekly, at the time, adding that "so far" she was having more fun as a blonde.

Evidently, though, she just couldn't stay away from the dark side!