nav-link change color on carousel-item transition

问题:

I have a carousel from Bootstrap 4 which includes three images. I want to change the nav-links color to red when the third carousel image is active and remove red color when the first and second images are active. Is there anyway to do this?

<div id="carouselExampleIndicators" class="carousel slide" data-ride="carousel">
    <ol class="carousel-indicators">
      <li data-target="#carouselExampleIndicators" data-slide-to="0" class="active"></li>
      <li data-target="#carouselExampleIndicators" data-slide-to="1"></li>
      <li data-target="#carouselExampleIndicators" data-slide-to="2"></li>
    </ol>
    <div class="carousel-inner" id="c-1">
      <div class="carousel-item active">
        <img id="c-1" class="d-block w-100 si" data-color='light' src="https://mrdp2rbn.portal.ir/themes/custom-2fc4/userfiles/e02825.jpg" alt="First slide">
      </div>
      <div class="carousel-item">
        <img id="c-2" class="d-block w-100 si" src="https://mrdp2rbn.portal.ir/themes/custom-2fc4/userfiles/decaa4.jpeg" alt="Second slide">
      </div>
      <div class="carousel-item c-3">
        <img id="" class="d-block w-100 c-3 si" src="https://mrdp2rbn.portal.ir/themes/custom-2fc4/userfiles/a7a145.jpg" alt="Third slide">
      </div>
    </div>
    <a class="carousel-control-prev" href="#carouselExampleIndicators" role="button" data-slide="prev">
      <span class="carousel-control-prev-icon" aria-hidden="true"></span>
      <span class="sr-only">Previous</span>
    </a>
    <a class="carousel-control-next" href="#carouselExampleIndicators" role="button" data-slide="next">
      <span class="carousel-control-next-icon" aria-hidden="true"></span>
      <span class="sr-only">Next</span>
    </a>
  </div>