I wish you goodluck with BuddyPress and WordPress.
I have been trialling BP & WP on my site for a long time (6 months or so)and I still have not got it going as I want.
My WP theme is BP compatible as Mercime has replied & she helped me with it.
However since then I have issues and problems. I really wanted BP for forum on my site but I have experienced problems getting a forum running as I want with BP.
I now have many users on my site and many seem to be spammers which I want to remove. Today I have spent more time with my site adding plugins bp-humanity & NurCaptcha in an attempt to cut down robot spam/spammers (& I cannot test these plugins as I would like?).
I came to BP forum to look for help & nowhere can I find a link to my previous posts (I can find these on W.org). I was trying to message Mercime again for help and ended up here!
As I said, goodluck to you with BuddyPress :-)