I've been working on this for a while. I realize it's not finished yet, but I got tired of the old one, so I have released it despite the kinks. Please leave your feedback, but know that I may not be timely in making changes.

Also, you can test out your own changes by various means. Firebug, obviously. Or try the CSS box on your profile page. Finally, you could clone Vortices and edit the AppJet code.