How to make use of it:

1. Add fallback colors along with Refresh Button and Copied data field to the color picker.

<div class="colors-container">
  <div class="color">
    <div class="color-hex">#000000</div>
  </div>
  <div class="color">
    <div class="color-hex">#000000</div>
  </div>
  <div class="color">
    <div class="color-hex">#000000</div>
  </div>
  <div class="color">
    <div class="color-hex">#000000</div>
  </div>
  <button class="refresh">Refresh Color</button>
  <div class="copied">Copied!</div>
</div>

2. The required CSS styles for the color picker.

.colors-container{
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-wrap: wrap;
}

.color{
  flex: 25%;
  min-height: auto;
  transition: .4s linear;
  cursor: pointer;
  position: relative;
}

.color:hover{
  filter: brightness(80%);
}

.color-hex{
  position: absolute;
  bottom: 10%;
  width: 100%;
  text-align: center;
  color: #fff;
  font-size: 24px;
  letter-spacing: 2px;
}

.refresh{
  position: fixed;
  top: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  border: none;
  border-radius: 50%;
  font-size: 18px;
  color: #fff;
  background-color: #000;
  outline: none;
  cursor: pointer;
  transition: .4s linear;
}

.refresh:hover{
  transform: rotate(180deg);
}

.copied{
  position: fixed;
  bottom: 20px;
  left: 20px;
  color: #fff;
  background-color: black;
  border-radius: 50px;
  padding: 15px 40px;
  min-width: 340px;
  text-align: center;
  display: none;
}

@media screen and (max-width:800px){
  .color{
    flex: 100%;
  }
}

3. Load the jQuery library within the doc.

<script src="/path/to/cdn/jquery.min.js"></script>

4. JavaScript to generate random colors.

$('.refresh').click(function(){
  $('.color').each(function(){
    var rColor = "#" + Math.random().toString(16).substr(2,6);
    $(this).css('background-color',rColor);
    $(this).children(".color-hex").text(rColor);
  });
}).trigger('click');

5. The JavaScript to repeat the chosen color to the clipboard.

$('.color').click(function(){
  var input = $('<input>');
  var color = $(this).children(".color-hex").text();
  $('body').append(input);
  input.val(color).select();
  document.execCommand('copy');
  input.remove();
  $('.copied').fadeIn().delay(2000).fadeOut(); 
});

Random Color Picker, ColorsPicker Plugin/Github

See Demo And Download