Customization guide for extensions:
Sometimes it is useful to display filter label instead of --All-- in drop-down filter in Layered Navigation, especially when using it as horizontal filter menu above products.
Copy app\design\frontend\base\default\template\manapro\filterdropdown\items.phtml
To app\design\frontend\YOUR_PACKAGE\YOUR_THEME\template\manapro\filterdropdown\items.phtml
Open it for editing and replace
__(' -- All --')
with
getFilter()->getFilterOptions()->getName()