Yesterday we devoted a fair bit of space on this blog to the topic of warming up your hair color for fall. Today, we’ve got a prime example of how well the technique can work for beauty-boosting. Behold, Jessica Biel: foxy brunette! Biel parted ways with her signature golden highlights last month, but at Glamour’s Reel Moments launch event last night in Beverly Hills, the A-Team star was sporting a gorgeous shade of deep, rich chocolaty brown. Full disclosure: There’s something about Justin’s S.O. that we’ve never really “got,” but everything seems so clear now with this new dye job (we’ll admit it, she’s a super-babe). Which look do you think works best for her?