Edit, preview changes in real time and save all your project's CSS stylesheets live in the browser.
A CSS live Editor that allows you to preview realtime CSS changes and then save your changes. It saves dated backups of each save, so you can go back if it breaks, and you should erase backups once on a while. It's a port from a Drupal module Live CSS http://drupal.org/project/live_css by guybedford http://drupal.org/user/746802 Now using ACE editor http://ace.ajax.org/ Tested on WordPress 3.6. But needs more testing !
=capabilities.php problem (not bug) SOLVED !=
Ok, now I did the correct thing and created an action to the wp_loaded hook to init the plugin, then, check whether the user can "erase themes" which is an Admin capability only, so the plugin only works if you are an admin. No need to modify the capabilities.php nor anything else.
Some users have had problems in former 12.05 release with their site being inaccesible after installing the plugin. It all seemed to be part of the same problem with the capabilities.php file that is discussed here: http://wordpress.org/support/topic/fatal-error-call-to-undefined-function-wp_get_current_user-4?replies=32
It works nice and perfect for me, but still needs testing !!!