Okay, I'm working with the iWork demo (really my first experience) and I'm checking out Keynote. One of the things that I would like to be able to do is create a theme so I can easily select it as my slide backgroud instead of having to insert and image all of the time. I tried the "save theme" thing, but I that doesn't seem to work. It shows up in the theme section, but I can't select it (or I try to and it doesn't stick). So, how do I create a theme starting from the beginning?