applying TwitterBootstrap and LESS

Rails 3.1.3

I'm trying to apply TwitterBootstrap and LESS

bundle install the following   gem 'less-rails-bootstrap', '~> 2.0.4'

Normal Twitter bootstrap is applied without problem. But I need to change themes to my own creation or downloaded from

My question is WHERE exactly should I place the LESS setting as a separate file?

Of course, in assets/stylesheet directory, but I placed it there, and checked the source code of the generated web page. For some reason, the normal twitter bootstrap setting comes AFTER the LESS I created.

The order of reading files seems important. Could anyone give me tips for this?