Trying to change color when I hover over link.

a.button:link,
a.button:hover,
a.button:visited,
a.button:active {
	background: #49657d;
	color: #fff;
	display: inline-block;
	padding: 6px 8px;
	margin: 2px 2px 6px 2px;
	border: 1px solid #395063;
	text-shadow: 1px 1px 0px #395063;
	font-family: Source Sans Pro,Tahoma,Helvetica Neue,Arial,sans-serif;
	font-size: 14px;
	font-style: normal;
}
 
a.button.small_button {
	margin: 0;
	padding: 3px 6px;
 
	font-size: 14px;
}
 
a.button span {
	padding: 3px 10px;
	display: inline-block;
}
 
a.button.new_thread_button span {
	background-position: 0 -340px;
}