This just skims the surface of some of the customization that can be applied to a Splunk application. For example, you can implement your own CSS for the app, or even use your own icons and graphics.
Splunk has a detailed manual on advanced development, including how to modify the CSS for an app, how to change the icons and images, and how to package your application to upload it to the Splunk app store. For more information, see the documentation at https://docs.splunk.com/Documentation/Splunk/latest/AdvancedDev.
