Stylish is a Firefox extension that allows easy management of user styles.
User styles empower your browsing experience by letting you fix ugly sites, customize the look of your browser or mail client, or just have fun.
With an online repository at userstyles.org, you don't even need to know how to write styles yourself; just a couple clicks and the chosen style is applied.
Having both JSView and Stylish can cause crashes in Firefox 2.0.
If you're experiencing crashing opening the Manage dialog, in about:config set extensions.stylish.fileVersion to 2 and try again.
Changes on the new version: Â· Updated the toolbar button to act more like other toolbar buttons\\r\\nÂ· New default in Firefox 4 is to use the Add-ons Manager when choosing Manage Styles. The setting extensions.stylish.manageView is still available - 0 for add-ons manager, 1 for stand-alone dialog, 2 for sidebar\\r\\nÂ· Added links for creating a new style and going to userstyles.org in add-ons manager\\r\\nÂ· Removed Page Style overlay\\r\\nÂ· Fixes for latest Firefox, Seamonkey, and Thunderbird\\r\\nÂ· Updated Czech and Japanese localizations\\r\\nÂ· Added partial Romanian localization