I didn't do that for this project, but it's a good idea. Most of the animation takes place in a room with light coming mostly from a fireplace.
My biggest issues are coverage, I keep forgetting where the clone function, that used to fill hairs is and getting a natural hairline. I only know the basics, maybe less since I rarely used it before. I have an idea for a cartoon dog though and I'd really like to use hair to it's fullest for that.