How to switch the SAP GUI Theme

S4HANA comes with a new SAP GUI theme – Belize, which has modern look and feel, however in my personal opinion is not as convenient as the classic one from developer’s point of view. It became a habit of mine to switch the theme back to Classic first thing when I get to a new system.

This is done from the menu More->SAP GUI settings and actions->Options

A new session should be opened to the SAP GUI in order the changes to take effect.