User Style Manager 0.9

User Style Manager is a free and open-source Firefox add-on that lets you better  manage custom User Styles.

Simply choose the file in the Options Page and press add, to add it to Firefox instantly. Edit an existing User Style, or Create a brand new User Style.

Three userstyles included by default :
· http://userstyles.org/styles/19308/awesomebar-popup
· http://userstyles.org/styles/46249/firefox-4-sleek-dialog-boxes
· http://userstyles.org/styles/46642/xff4-cleanest-addon-manager-use-addon-instead

More features coming in next version, mainly the ability to install and update userstyles from userstyles.org itself.

User Style Manager is cross-platform and it works on Mac OS X, Windows and Linux.

Here are some key features of "User Style Manager":

· Lightweight and restarless user styles manager
· Edit an existing User Styles, Create a brand new User Style or choose an existing Style sheet from your Hard Disk and add it to Firefox
· Editing, deleting of multiple Styles as once
· Syntax highlighting, quick preview of Styles being edited and a syntax validator to check and display errors in the syntax of css.
· Menu entry in Tools Menu and Apps Menu along with a toolbar button and a Customizable Shortcut Key to quickly access Options or to enable/disable any style
· Select any css code on a webpage and add it as a style sheet using the context menu entry
· Styles are automatically sorted based on the area they are applied on.
· Styles are regularly backed up and used in case the original file is somehow deleted

A very powerful Style Editor with the following features:
· CSS Auto-completer:CSS properties are automatically suggested as you type in a dropdown list
· Color Previewer: Hover over any color code to quickly preview the color along with the transparency level
· Image Previewer: Double click over the base64 image code or the link to the image to quickly preview the image
· Color Picker: Easily pick and edit any color using the built in Color Picker. Start typing rgb( and the color picker will pop up for your help, or double click over any color code.
· Minified styles can be made beautiful using the Beautify CSS option in the Edit Menu of the Editor.
· Any style can be quickly previewed to see the result
· Feature complete Find and Replace with support for Regular Expressions

Requirements:

· Firefox 8.0 and later

What's New in This Release: [ read full changelog ]

· Added support for userstyles.org. Styles can be updated and/or installed directly from userstyles.orf
· Update and Update All buttons working now
· Need to figure out a way to auto update and handle conflict with Stylish on userstyles.org page
· Toolbar button fixed
· Opening an informative page to display all the features of the addon upon update or first install
· Further streamlined the editor's validation process
· Added Russian localizations provided by Drugoy