How to change the folder icon in tree view on the left?

[thoste]

Is there a way to change the folder icon in the message tree view pane on the left side?

Possibly by replacing the original folder icon picture file (which exactly?)?

or by changing the userChrome.css file?

Thank you
Thomas

[morat]

The 3pane window, also called the main window, consists of three panes.

* folder pane
* thread pane
* message pane

What's the message tree view pane?

Here is how to style the folder pane.

Folder pane styling
http://forums.mozillazine.org/viewtopic.php?f=30&t=3064381

[thoste]

folder pane

Thank you. I will check the linked thread