Ah, ok I need to test it more

, thanks. I'm pretty sure the guy behind Taskfade wouldn't mind, considering he says the following in the readme-
Taskfade is open source, and is under no particular license. I ask only
that if you do anything interesting with it or make changes which you
think might be useful, you contact me and give me credit if you release
your changes.
I'll send him an email to let him know if I do 'borrow' that neat feature.
[Edit for a P.S.]
Anyone try it on Vista?-Nighted
Off hand I'm pretty sure it won't work on Vista just because of the way the start button in Vista is a separate window entirely and not a true child of the rest of the taskbar. That said it would be easy to make this work, as it would be also for Skrommel's FadingTaskbar. It's just one of those things where a small change messes up apps until the developer gets the chance to test it themselves.