css - How to change colour of blue highlight on select box dropdown

Question

How do I change the blue highlight on this dropdown please?

link to select box demo

I'd like to change the highlight color to gray if this is possible.

select {
  border: 0;
  color: #EEE;
  background: transparent;
  font-size: 20px;
  font-weight: bold;
  padding: 2px 10px;
  width: 378px;
  *width: 350px;
  *background: #58B14C;
  -webkit-appearance: none;
}

#mainselection {
  overflow: hidden;
  width: 350px;
  -moz-border-radius: 9px 9px 9px 9px;
  -webkit-border-radius: 9px 9px 9px 9px;
  border-radius: 9px 9px 9px 9px;
  box-shadow: 1px 1px 11px #330033;
  background: url("http://www.danielneumann.com/wp-content/uploads/2011/01/arrow.gif") no-repeat scroll 319px 5px #58B14C;
}

<div id="mainselection">
  <select>
    <option>Select an Option</option>
    <option>Option 1</option>
    <option>Option 2</option>
  </select>
</div>

Answer 1

Yes, you could change the background of select but you will not be able to change the highlight color (when you hover) by using CSS!

You have few options:

1. Is to convert select into ul, li kind of select and do anything you want with this.

2. Use libraries like Choosen, Select2 or jQuery Form Styler . These allow you to style in much more broad and cross-browser way.