Wikimedia Bugzilla is closed!

At present on enwiki, a user who edits a protected page is made aware of the fact because the text box is tinted red via CSS when they edit, if the page is protected. This was very successful in cutting down accidental "editing through protection" issues.

A common problem is when users who normally edit logged in, accidentally edit logged out, exposing their IP and often requiring suppression.

Can CSS elements be added to the editing page, that depend on whether a user is logged-in or logged-out and apply CSS to the edit box if so? The benefit of this would be that users who wish to avoid accidentally editing logged-out, could set up their monobook.css to shade the edit box if they are logged in, which would make it immediately apparent to them (by lack of shading) if they clicked on an "edit" tab when accidentally logged out.

Alternatively it would allow a mediawiki site (WMF or other) to shade the edit box for logged-in or logged-out users, making it clear to all whether they were logged in or not upon editing.

Cost of this: adding a CSS id to the edit page that changes depending whether the user is logged in or not.