Someone is working on a Metacity theme editor called Metacity Themer. It appears to take rather a different approach from Opacity; it’ll be interesting to see how this turns out. I’m not sure whether I should abandon Opacity; I wasn’t working on it anyway much (though I had thought about it quite a bit) and I don’t really have time to finish a theme editor anyway with the amount of work that Metacity needs, so Opacity would have been a while off prime time anyway. Let us know what you think of Metacity Themer.