How to Customise the cPanel look / branding through WHM
Step 1 - Log into WHM and navigate to the
Customization tool.
Step 2 - From here, you can do three main things:
Customise Branding - This lets you modify the company name, logo, help link and other data that appears in each cPanel account.
Customise Style - This lets you chose the style (or "theme") that changes the look of cPanel. You can also upload new styles. Warning: If you upload new styles, you will often find your cPanel accounts break completely and are not able to be used.
Public Contact - This lets you edit the publicly available information so people can identify you as the web host/designer of a website or cPanel account
For more information, see
cPanel's official document on Customisation.