The usually very blond, Katherine Heigl has taken a walk on the dark side – at least her hair has.

Heigl was spotted out and about in Los Feliz, Calif. sporting a new, dark brunette hair color.

She lunched at Little Dom’s, wearing a brown coat, black turtleneck and dark shades.  

Heigl hasn’t been on Grey’s Anatomy too much this season.  She is headed to Las Vegas on March 18 for ShoWest 2010 where she will be honored as the female star of the year.

What do you think of Katherine’s “new” hair?  Do you like her better as a blonde or a brunette.