The Maroon 5 singer also looked nearly unrecognizable without his signature scruff in Santa Barbara.Adam Levine and Behati Prinsloo attend the 12th Breakthrough Prize Ceremony at Barker Hangar on April 18, 2026 in Santa Monica, CaliforniaCredit: Getty ImagesThe GistBehati Prinsloo showed off a Carolyn Bessette-Kennedy-coded hair color transformation during a rare red carpet appearance on April 18.The model debuted her lightest hair color in over…