For those with lighter brows, defining them may be more important than some of these other steps. (polishedwhimsy.com)
The dark / light brow shadow tones make for great options for those who like to match their brow colour to their makeup style and are just the right texture! (dressmeblog.me)
I have really light brows, so it helped me fill in and define without obvious coloration. (beautylish.com)