This is a set of icons for LyX to give it a GNOME look and feel. Icons are taken mostly from GNOME-colors (brave or blue version), some from the default GNOME icons and some are my own creation.
To install, extract to
depending on your version of LyX (the location is listed in the Help>About menu of LyX). You will probably want to back up your existing icons and note you will need root privileges to do the above.
To enable the GTK style for Qt apps such as LyX, go to http://labs.trolltech.com/page/Projects/Styles/GtkStyle and follow the instructions there. Also make sure to change the toolbar icons to Big-sized (right click on any toolbar)