PhpSchool\CliMenu\MenuStyle::getAvailableColours PHP Метод

    public static function getAvailableColours()
    {
        return array_keys(self::$availableBackgroundColors);
    }

 /**
  * @param string $colour
  * @return $this
  */
 public function setForegroundColour($colour)
 {
     Assertion::inArray($colour, MenuStyle::getAvailableColours());
     $this->style['fg'] = $colour;
     return $this;
 }