Thanks for the link, I applied for access so hopefully I'll get that tutorial soon. Sounds perfect!
I just took another crack at it and decided to just color very broadly and then erase away when I got something useful. I still dont have the color where I want (the goal was to match the eyebrows) but it's late and this is taking a while. Here's what I've got in case anyone's interested:
http://i.imgur.com/Ldq7aJ0.jpg