Change Active Nav Link Color – Untheme

I’m using the Untheme template and almost have everything adjusted to my liking. I’d like to change the “active” color of my navigation links. I’ve added the following to the CSS below hover but it isn’t working…

#nav a:active {
line-height: 30px;
vertical-align: middle;
color: #f9a807;
text-decoration: none !important;
}

Ideas? Also, if there’s a better way to get the nav links to be this color when active please let me know.

Thank you!