A Look & Feel is defined in a set of files. You can set the Look & Feel for the Bonita BPM Portal Web interface, an application, a custom page, or for the Bonita BPM Portal Mobile interface.
This page explains how to modify the Look & Feel of Bonita BPM Portal and of forms in processes run from the Portal. You can also specify the Look & Feel of a web application in Bonita BPM Studio. The definition in the Portal overrides the definition created in Studio.