News January Jones Debuts 'Grease'-Inspired Pink Hair By Jessica Roy 4:55 PM PDT, March 13, 2015 Instagram As the countdown to the final episodes of Mad Men approaches, January Jones celebrated appropriately -- with a decidedly modern dye job. On Thursday night, Jones showed off her new pink hair that will be sending thousands of women to their stylists over the next few weeks. Alongside a photo of herself at a salon, she posted, "Can you guess where I'm going with this? #backtomyroots" NEWS: The Party's (Almost) Over for Mad Men A few hours later, the Last Man on Earth star debuted the result: Beautiful blush-pink locks. She wrote that they were inspired by the movie Grease."Call me 'Frenchie'," she wrote. "Thanks for the dip @jenniferjbeauty."In the past, Jones has rocked blonde, brunette, and red hair, and in 2012, the 37-year-old actress sported pale pink highlights (possibly the "roots" she was referring to).Getty ImagesWas she inspired by pal Nicole Richie's new hair? Either way, it looks like it’s a pink world in 2015!See more celebrity hair transformations: Related GalleryTwo Looks, One Star: Major Celeb Hair Transformations of the Past!