Using the Global Objects - Theme editor
To edit or create themes in the web client, use the Global Objects - Theme dialog box in the Web Designer.
           Note: 
           
         - Before you modify a theme, ensure that the theme is locked or checked out on your user account.
 - For the procedure to edit or create themes in the Windows client, see Using the Theme Editor dialog box.
 
          To see the changes made on the Global Objects - Themes, you must return to the web client to ensure that the theme is selected, then log out and log in again to the web client.