Rated 5 out of 5 stars

Gmail has brought this in labs.

This review is for a previous version of the add-on (0.3). 

Rated 4 out of 5 stars

A much simpler functionality can be had using:
http://userstyles.org/styles/36232
The script may be customized to your needs

This review is for a previous version of the add-on (0.2). 

Rated 4 out of 5 stars

A much simpler functionality can be had using:
http://userstyles.org/styles/36232
The script may be customized to your needs

This review is for a previous version of the add-on (0.2).