Katherine Heigl Brunette Haircolor. We love it when stars show us new looks and recently at the premiere of the Ugly Truth Katherine when from blonde to brunette. I actually adore this color on her since it really warms up her skin tone giving her a much more alluring sexy vibe. Her dress is also hot the sheer fabric at the bottom paired with the bow worn around the waist. A very chic look, look below to see her new hair color and her dress.