Re: Custom Profile Page
https://trac.buddypress.org/browser/tags/1.2.5.2/bp-themes/bp-default/members/single/profile.php where you can see calls to different parts of profile page lines 13, 16, 19
Line#19 – https://trac.buddypress.org/browser/tags/1.2.5.2/bp-themes/bp-default/members/single/profile/profile-loop.php
You can change style in either 3 ways: a) tweak css only; b) customize BP files; and c) tweak css and customize files. Tweaking CSS is the easiest way. Customizing php file is more intensive. Install Firebug add-on for Firefox to help you find hooks to change layout/colours via CSS.
