I created I style to slim down the tabs which were too high for me since Australis. It also removes the close buttons on tabs (I use middle click for fast closing tabs). Delete last script to disable it. Best effect for this style is if you use with "Classic toolbar buttons" add-on with "classic small buttons" enabled.
Hide Reader Button on address bar
Hide Sync Tab in Options Dialog
New look for bookmark button
This hides the bookmarks toolbar menu folder.
FB, Twitter, chrome-extension
Very simple and transparent CSS extension for your about:newtab. Ideal when about:newtab is your homepage. Allows you to easily swap out the background image if you don't like the default Twilight Sparkle.
The title says it all. No more square corners. This works good in the default theme.
Custom style for the about:mozilla Changelog: Feb 28 2008 - updated for The Book of Mozilla 11:9 (10th Edition) - still working on the old book Feb 16 2006 - initial release