Changing the HTML Title of WHM

Where is the template/theme for the X theme of WHM stored when Cpanel/WHM is installed? I want to edit the title on some of the virtual machines I work with daily so I can keep them open in tabs and know exactly what I am looking at.

I do not mean the Cpanel templates, I mean the WHM templates.

Basically I am looking for the path like "/var/cpanel/templates" for the main template of WHM that has the two frames.

 

Thank you both that was exactly what I was looking for!

In case someone less technical wants to do this let me clarify for them that "root" is a file and not a directory. To edit this file you would need sudo privileges and would use something like

without the quotes to make the changes.