As shown below, rails generate creates scaffolds.css.scss, but rails destroy does not remove it.

~/Dev/mwf/MWF-ShopApp: rails g scaffold Poop
invoke active_record
create db/migrate/20120518151908_create_poops.rb
create app/models/poop.rb
invoke test_unit
create test/unit/poop_test.rb
create test/fixtures/poops.yml
route resources :poops
invoke scaffold_controller
create app/controllers/poops_controller.rb
invoke erb
create app/views/poops
create app/views/poops/index.html.erb
create app/views/poops/edit.html.erb
create app/views/poops/show.html.erb
create app/views/poops/new.html.erb
create app/views/poops/_form.html.erb
invoke test_unit
create test/functional/poops_controller_test.rb
invoke helper
create app/helpers/poops_helper.rb
invoke test_unit
create test/unit/helpers/poops_helper_test.rb
invoke assets
invoke coffee
create app/assets/javascripts/poops.js.coffee
invoke scss
create app/assets/stylesheets/poops.css.scss
invoke scss
create app/assets/stylesheets/scaffolds.css.scss

~/Dev/mwf/MWF-ShopApp: rails destroy scaffold Poop
invoke active_record
remove db/migrate/20120518151908_create_poops.rb
remove app/models/poop.rb
invoke test_unit
remove test/unit/poop_test.rb
remove test/fixtures/poops.yml
route resources :poops
invoke scaffold_controller
remove app/controllers/poops_controller.rb
invoke erb
remove app/views/poops
remove app/views/poops/index.html.erb
remove app/views/poops/edit.html.erb
remove app/views/poops/show.html.erb
remove app/views/poops/new.html.erb
remove app/views/poops/_form.html.erb
invoke test_unit
remove test/functional/poops_controller_test.rb
invoke helper
remove app/helpers/poops_helper.rb
invoke test_unit
remove test/unit/helpers/poops_helper_test.rb
invoke assets
invoke coffee
remove app/assets/javascripts/poops.js.coffee
invoke scss
remove app/assets/stylesheets/poops.css.scss
invoke scss