I thought this was a great addition until I realized that when you change a certain type of font, it does not change all of them. For instance, I wanted to change my post headers to a specific font and color and it only changed a couple.
In addition, it will not let me select just ONE thing (header OR menu OR post) it will auto select a bunch of things and make it so that you cannot update. I deactivated to try and get a clean start, and when I re-installed it, all the settings came back. I think I will deactivate this plug in for good, and try to find a way to edit everything at the same time, so that I do not have 1 million fonts depending on where you click.