Cool [Q] Changing the app drawer icon

WITHOUT downloading a Launcher

How do I change the app drawer icon?

Where is the icon stored?

What is the name of the icon file?

Yes I have root access.
I am on a lLG G2 4.2.2
Kernel 3.4.0

I want to do this manually not with a launcher.
Model Number SPH-D710
Android Version 4.0.4
Baseband Version S: D710.10S.FL24
Kernel Version 3.0.61 Kuban_Kernel V0.2.5
Build Number RUJELUS22 The Blu Kuban FL24
Hardware Version D710.10