Yes, you can customize the Fiori UI based on your needs. SAP offers many ways to customize the UI. The primary one is the Fiori UI Theme Designer. Using the UI theme designer, you can change the Fiori background color, text color, link color, and background gradient color. It is also possible to change the Fiori background image and change the company logo too. You can completely revamp the Fiori launchpad by creating the UI theme. The UI theme has to be imported into the front end system to change the look and feel of the Fiori launchpad.