Previewing Style Parameters 
Before creating your own theme, select one of the templates provided by SAP and look at the predefined parameters to see what you want to change.
Choose .
The Theme Editor opens.
Click the required template to edit the theme.
Click the individual elements on the left-hand side of the screen and view the parameters and their properties in the preview window.
Note
If you experience problems seeing the preview, check the nonProxyHost settings. For more information, see Checking the nonProxyHost Settings for the Theme Editor.