You can use desktop environment preference tools to configure almost every feature of the desktop environment. Each tool controls a particular part of the behavior of the desktop environment. For example, you can use a preference tool to select a theme for your desktop environment. A theme is a group of coordinated settings that specify the visual appearance of a part of your interface.
For convenience, the tools are grouped under the following headings:
Basic
Accessibility
Advanced
You can open your desktop environment preference tools in either of the following ways:
Choose Applications -> Desktop Preferences. Choose the item that you require from the submenus.
Double-click on the Start Here object on the desktop. A file manager window opens at the Start Here location. Double-click on the Desktop Preferences object in the file manager window to display the preference tools. Double-click on the item that you require.