Kelly Rowland Shows Off Sombre ( Subtle Ombre Hair Trend ). Kelly is a prime example off how to correctly pull off the latest hair coloring trend, sombre hair. The sombre trend features a more subtle version of ombre, and usually moves smoothly between two colors that aren’t that far apart on the color spectrum. The r&b diva has been spotted with the look for a few weeks now, and we love how the soft brown hue towards her ends really lift and balance out her complexion. Sombre is a great alternative if you want to showcase a new hair color, but you lean towards hues that are soft and less noticeable. Look below to see how Kelly is rocking her new sombre hair color.