metabox-classic.css

/**
 * Metabox Tabs
 */

ul.wpseo-metabox-tabs li.active {
	background-color: #EFF8FF;
}

ul.wpseo-metabox-tabs li.active, div.wpseo-tab-content {
	border-color: #D1E5EE;
}

.wpseo-metabox-tabs .active a {
	color: #333;
}

#wpseotab .ui-widget-content .ui-state-hover {
	border: 1px solid #D1E5EE;
	background: #EFF8FF;
	color: #333;
}