You can use the Themes page to control the look and feel of the Identity Manager user interface.
A theme is a set of visual characteristics that apply to the entire user interface (including the guest and login pages, the Identity Self-Service tab, the Requests & Approvals tab, and the Administration tab). There’s always exactly one theme in effect for the user interface. The Themes page offers a choice of several themes, in case you want to switch to a different one.
The Themes page also enables you to:
Preview each theme choice to see how it looks
Customize any theme choice to reflect your own branding (logo, etc.)