Colors\Color::__invoke PHP Method

    public function __invoke($string)
    {
        return $this->setInternalState($string);
    }

 /**
  * @param string $string
  * @param string $colour
  *
  * @return string
  */
 public function colour($string, $colour)
 {
     try {
         return $this->color->__invoke($string)->apply($colour)->__toString();
     } catch (NoStyleFoundException $e) {
         return $string;
     }
 }