Updates: All font definitions have been stripped out of the style sheets, so what everyone is now seeing is their browser default. If people could spread it around the grapevine that anyone who is dissatisfied with how their IJ site font currently looks can change it by going into their browser settings, I'd appreciate that a lot.
Cool New Stuff: Squeaky had a great idea. Since we all know that some people love the Tweak logo and Tweak Says, while some people really don't, Squeaky has added my sheet that removes Tweak and Tweak Says as an alternate style to all the site schemes. This means that everyone using a browser that supports alternate styles can go to the View menu and select the "no tweak" style to get rid of those.
In addition, I've worked up some sheets to add Tweak, for those who want him in Monodramatic, and to display only Tweak or only Tweak Says. We'll see how those work out.
The following browsers support alternate styles:
* Firefox users can switch stylesheets using the View > Page Style menu.
* Opera users can switch stylesheets using the View > Style menu. In Opera 7.x, you can also click the little down arrow next to the User/Author Mode (fourth) button on the Address Bar. In Opera 8, the User/Author button has moved to the view bar which pops up/down from the address bar.
* SeaMonkey?, Mozilla, Netscape6+ and Epiphany (the default browser for the GNOME desktop on UNIX/Linux) users can switch stylesheets using the View > Use Style menu.
* Konqueror (the default browser for the KDE desktop on UNIX/Linux) users can switch stylesheets using the View > Use Stylesheet menu.
* Galeon (another popular GNOME browser on UNIX/Linux) users can switch stylesheets using the View > Styles menu.
Source: CSS-Discuss Wiki
The good people at this wiki also point to a page with a bookmarklet that may allow IE users to choose alternate styles: scroll down to the bottom. Safari and Camino users seem to be out of luck at this date.