Carousel Bootstrap - how to change the color of the arrows?

Question

I created a slideshow with the help of Carousel Bootstrap.
But I couldn't change the color of the arrows.
Can you help me find out how to change the color of the arrows? Thanks!
slideshow.component.html:

<div class="container">
  <div class="row">
    <div class="col-md-2">
    </div>
    <div class= "col-md-8">
      <ngb-carousel id="carousel_1" #carousel="ngbCarousel" class="text-lg-center" #myCarousel="ngbCarousel" showNavigationArrows="true"
        interval="2500" pauseOnHover="false">
        <ng-template ngbSlide *ngFor="let image of images;let i = index" id="{{i}}">
          <div class="picsum-img-wrapper">
            <img [src]="image" alt="Random first slide"  style=" max-height:300px; margin:0 auto;">
          </div>
          <div class="carousel-caption">
            <h6>{{titles[i]}}</h6>
          </div>
          <a class="carousel-control-prev" href="#carousel_1" data-slide="prev">
            <span class="carousel-control-prev-icon"></span>
          </a>
          <a class="carousel-control-next" href="#carousel_1" data-slide="next">
            <span class="carousel-control-next-icon"></span>
          </a>
        </ng-template>
      </ngb-carousel>
    </div>
    <div class="col-md-2">
    </div>
  </div>
</div>

slideshow.component.css:

.picsum-img-wrapper{
    background-color: #D4DADE ; 
}
.carousel-control-next-icon{ 
    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='w3.org/2000/svg' fill='%23FF0000' viewBox='0 0 8 8'%3E%3Cpath d='M2.75 0l-1.5 1.5 2.5 2.5-2.5 2.5 1.5 1.5 4-4-4-4z'/%3E%3C/svg%3E");
 } 
 .carousel-control-prev-icon{ 
     background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='w3.org/2000/svg' fill='%23FF0000' viewBox='0 0 8 8'%3E%3Cpath d='M5.25 0l-4 4 4 4 1.5-1.5-2.5-2.5 2.5-2.5-1.5-1.5z'/%3E%3C/svg%3E");
}

Answer 1

I have made code snippets that change the color of the prevous and next icon indicator. Please run the code snippet and you will see the icon color has changed to red.

body {
  background: skyblue !important;
}

span.carousel-control-next-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='%23ff0000' width='8' height='8' viewBox='0 0 8 8'%3e%3cpath d='M2.75 0l-1.5 1.5L3.75 4l-2.5 2.5L2.75 8l4-4-4-4z'/%3e%3c/svg%3e");
}

span.carousel-control-prev-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='%23ff0000' width='8' height='8' viewBox='0 0 8 8'%3e%3cpath d='M5.25 0l-4 4 4 4 1.5-1.5L4.25 4l2.5-2.5L5.25 0z'/%3e%3c/svg%3e");

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js"></script>


<div class="container">
  <div class="row">
    <div class="col-md-2">
    </div>
    <div class="col-md-8">
      <ngb-carousel id="carousel_1" #carousel="ngbCarousel" class="text-lg-center" #myCarousel="ngbCarousel" showNavigationArrows="true" interval="2500" pauseOnHover="false">
        <ng-template ngbSlide *ngFor="let image of images;let i = index" id="{{i}}">
          <div class="picsum-img-wrapper">
            <img [src]="image" alt="Random first slide" style=" max-height:300px; margin:0 auto;">
          </div>
          <div class="carousel-caption">
            <h6>{{titles[i]}}</h6>
          </div>
          <a class="carousel-control-prev" href="#carousel_1" data-slide="prev">
            <span class="carousel-control-prev-icon"></span>
          </a>
          <a class="carousel-control-next" href="#carousel_1" data-slide="next">
            <span class="carousel-control-next-icon"></span>
          </a>
        </ng-template>
      </ngb-carousel>
    </div>
    <div class="col-md-2">
    </div>
  </div>
</div>