public function draw($name)
    {
        $this->bstall->load($name);
        
        $pixels = Input::get('pixels');
        foreach($pixels as $p) {
            if(isset($p['x']) 
            && isset($p['y']) 
            && isset($p['c'])) {
                $this->bstall->write($p['x'], $p['y'], $p['c']);
            }
        }
        
        $this->bstall->save($name);

        return Response::json(["success" => true]);
    }