The most important thing is to think about the administrator from the point of view of the user.
A common mistake is to create a panel based on how the application is developed. Use terminology and micro-copy that reflect the task that the user wants to participate in. For example, the user wants to "add page" or "change calendar event." Admin panels often have menu items, such as โmodules,โ which are unintuitive to those that did not create the application.
Subtly can go a long way.
Another common mistake is to make headlines and accents big and too bright.
You can get color theme ideas from http://kuler.adobe.com
Avoid centering.
Usually he looks unprofessional.
source share