The Facebook® Customizer is a simple customizer that allows you to change the color scheme of Facebook™. It provides you with several options to choose from, including many different themes.

To use this extension, you first need to install this extension. After installation, click on the icon in the right-top corner to open the control panel. You will see the different options you can choose from in the extension. 

How to use the Color Changer for Facebook™:

First, select the theme you want to change, and then, choose from several options, including background images. You can choose from many different backgrounds and set them up as you wish.