/* default theme */
.faves { background: rgb(66, 139, 202); }
.faves:hover { background: rgb(40, 94, 142); cursor: pointer; }
.plays { background: #f0ad4e; }
.plays:hover { background: #d58512; cursor: pointer; }

.bordered {
    border-radius: 7px;
    -moz-box-shadow: 0 0 4px 4px #888;
    -webkit-box-shadow: 0 0 4px 4px#888;
    box-shadow: 0 0 4px 4px #888;
}

.thumbnail:hover, .thumbnail:focus {
	border-color: #66afe9;
	-webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, 0.6);
	box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, 0.6);
}

body {
	background-color: rgba(0, 0, 0, 0.009);
}

/* default theme */
.faves { background: rgb(66, 139, 202); }
.faves:hover { background: rgb(40, 94, 142); cursor: pointer; }
.plays { background: #f0ad4e; }
.plays:hover { background: #d58512; cursor: pointer; }

.bordered {
    border-radius: 7px;
    -moz-box-shadow: 0 0 4px 4px #888;
    -webkit-box-shadow: 0 0 4px 4px#888;
    box-shadow: 0 0 4px 4px #888;
}

.thumbnail:hover, .thumbnail:focus {
	border-color: #66afe9;
	-webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, 0.6);
	box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, 0.6);
}

body {
	background-color: rgba(0, 0, 0, 0.04);
}

Make the site background about 15% darker
Make the site background about 15% darker
