What will be the output of this PHP code?

What will be the output of this PHP code?

<?php
class Car {
  public $color;
  public function __construct($color) {
    $this->color = $color;
  }
  public function getColor() {
    return $this->color;
  }
}
$myCar = new Car('red');
echo $myCar->getColor();
?>