Hmm, my free accounts have a few style modifications saved, although I haven't done any layer modifications on any of my accounts. Those accounts haven't had as many color/module modified styles as this one does, so it's a pretty small sample, but there's at least one interim layout saved that I was playing with before I gave up on it and switched to something else.

*resists the urge to learn to change layers just to see what happens - the to-do list is entirely too long as it is*