Normally, the OnSemble Theme has a light grey header bar and black text on the top of the island pages.
We understand some users would prefer to shift this. To make this easier, you can download this custom theme (only on versions 7.0+) that will change your portal's header bar and text to transparent.
To get this Theme into your portal:
You will need to download the theme attached to this article. (It may look a little strange, as the .zip file has the file type .pwtheme)
Navigate to Portal Tools -> Manage Portal Framework ->Theme Manager.
Choose Import Theme at the top, and upload this new Theme.
After, you may wish to change the drop down to reflect the new theme (this will ensure new Users have the right theme) and perhaps make sure it's the only theme 'Users Can Choose.'
To change Users to the new Theme:
You will need server access* and to follow the instructions in this linked article. This is the ONLY way to change all users at once.
Barring that, if you have set the 'User Can Choose' check box, users can set themselves to the new Theme.
Portal Administrators can set users individually to the new theme by going to Portal Tools -> Manage Portal Users -> User Manager. Select a user and choose Edit Profile from the drop down. Using the Theme tab, choose the new theme.
*Rackspace users will have to have Passageways Tech Support perform this process.