As the leaves change color, most of us beauty junkies get the itch to do the same to our hair. But in the sea of fall hair colors, it's easy to get lost. After all, hair color inspiration comes from everywhere.

"Beyond the looks seen on the runway and the red carpet, inspiration for trends can be drawn from our everyday surroundings," says celebrity colorist Kate Reid for Color.Me by Kevin Murphy. "Architecture and accessories, especially precious metals like copper, rose gold and yellow gold, which are desirable shades at the moment."

Less expectedly, fall hair color inspiration also comes from economic factors, adds Revlon hair color expert Miquel Garcia. "Hair color is very sensitive to economical growth, since customers go more for low-maintenance techniques -- like ombré -- during hard times," he says. (Read: New baby, new job, etc.).

So, to get the skinny on the best, trendiest and most doable fall hair colors, we consulted four top industry authorities: Reid, Garcia, Joico celebrity colorist Denis de Souza and ArtLab senior stylist Justin Woods. Here, the fall hair colors that will earn you all the compliments this season. We dare you to get through this roundup without calling your colorist.

If you haven't heard yet, sombré stands for "soft-" or "subtle ombré," says de Souza. As we probably all remember, ombré had a major moment a few years ago, thanks to celebrities like Gisele Bundchen and Lauren Conrad, and was a much starker, dip-dyed look. Sombré is the "modernized version" -- softer and more refined, meant to resemble hair that's been naturally lightened by the sun. Celebs like Jessica Alba and Rosie Huntington-Whiteley debuted the fall hair color last year, and it is still going strong.

Part of sombré's continued popularity is that it's "very low-maintenance allowing your hair to grow out naturally," says de Souza. Unlike the ombré of 2011, sombré doesn't pair two dramatic colors together. Instead, your base color casually transitions into lighter shades with "strategically placed highlights around the face, which cascade into heavy highlights at the ends," de Souza explains.

Chung's light caramel highlights start around her face, bringing natural light to her skin.

Soften the stark contrasts of last year's ombre with this lovely example of sombré for dark hair.

Hungtington-Whiteley was one of the first to rock a natural gradient.