Urlbar red background on data link

Added by gialloporpora@userstyles, Created: Sep 05, 2012, Updated: Sep 11, 2012
With the style applied

Description:

According with this post on the Sophos weblog, a norwegian researcher have pointed out that a data URI could be used in phishing attach.
http://nakedsecurity.sophos.com/2012/08/31/phishing-without-a-webpage-researcher-reveals-how-a-link-itself-can-be-malicious/
This style change the color of the Firefox's urlbar (default is red=#f00) on a data link to alert to be careful on these links.
This style could not be applied via userChrome.css, by default Firefox not allow to detect the url to use with styles.
Update: added code to show a red hand when mouse is over a data link in pages.

More info
For an example of data link copy in your urlbar the data:text/html in this page:
https://gist.github.com/3656334. This is not malicious, it is only an HTML page encoded in base64

Installs:
Applies to:
all URLs
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