.adv_search_tab_item.active {
background: #445A8C!important;
color: #fff;
border: 1px solid #445A8C!important;
}
.adv_search_tab_item.sales{
border: 1px solid #D67B04;
background: #D67B04;
}

.adv_search_tab_item.foreclosure{
border: 1px solid #DC663C;
background: #DC663C;
}

.adv_search_tab_item a{
color:#fff;
}

.adv_search_tab_item.rentals{
border: 1px solid #0489C2;
background: #0489C2;
}
.adv_search_tab_item {
text-transform: uppercase;
font-weight: 600;
letter-spacing: 1px;
}

 

Help for custom css: http://help.wpresidence.net/article/how-to-add-custom-css/