Edit: I managed to edit the theme somewhat, but still not altogether happy with it. Really not a user-friendly interface, and if it hadn't been for the scant html/css experience I had from other sites (LiveJournal, Tumblr, Twitter) then I wouldn't have even gotten this far.
Dear BL: can you please make it easier to create your own theme? Maybe create a Theme Creator? That would make things better. The world would smile and there would be peace. Please, BL, bring peace to the world. Bring a Theme Generator to BookLikes!