Very useful tool, and takes the time out of doing this myself. Just picked up AOEIII this week and can't wait to start digging into it. The light was one of the first things I found and it seemed a bit much. This will be a big help as I start designing.
Previous comment - this isn't something to install. It is a tool that you open with Adobe to see the different lighting styles you can select, so you don't have to go through the whole list while you're building each time to find what you want.