protected function gatherCSSFiles() {
		$this->output->writeln('Scanning theme "'.$this->theme.'" for CSS files');

		$this->finder
			 	->files()
			 	->in($this->themeDir)
			 	->name('*.css')
			 	->notName('*.blubber.css')
			 	->notName('*.lean.css');
		
		foreach($this->finder as $file) {
			$filename = basename($file->getRealPath());
			if($this->output->ask("Include the file <caution>$filename</caution>?")) {
				$this->cssFiles[] = $file->getRealPath();
			}
		}
	}