Image Source: Getty / Michael Buckner / Contributor [1]

Sydney Sweeney [2] is going back to her roots. On Nov. 17, the actor attended the GQ Spain Men of the Year Awards with a new hair color [3] in tow. In recent years, Sweeney has become well-known for her now-signature blond hair [4], so this fresh look marks a new era for the star.

According to a post on her Instagram Story, she wanted to go back to her natural color: a warm-toned brown that's perfectly on trend with the newly popular "winter gold [5]" hair color that's taking over Hollywood. The color was done by celebrity hairstylist Glen Coco Oropeza [6]. Though she had the darker hue for most of her childhood, this is the first time she's worn it since becoming a household name thanks to her role on HBO's "Euphoria [7]."

Like the "expensive brunette" [8] trend from the summer, "winter gold" is particularly well-suited for dark hair. It incorporates gold for the hair's undertone, rather than red or chocolate, for instance, so the end result is somewhere between a classic brunette and a glossy ombré. Take a closer look at Sweeney's hair below.

Image Source: Getty / Carlos Alvarez / Contributor [9]