Page created look different from the BP ones (Members, etc...)

Hi,
i have BP Corporate installed in a WP 3.4.2 BP 1.6.1 configuration.
I've created a bunch of pages and they look different form the Buddypress pages (Activity, Members etc). There's one sidebar on the right as Buddypress pages, but it is wider and the fonts are different.
My goal is to make my pages look exactly like the ones created by BP.
I've tried the templates available (3 colums, blog, full width) with no luck... How can i achieve this?
thanks in advance
Sigfrido