.wp-paginate .current {
    color: #fff;
    background: #CA1821;
    border: 1px solid #CA1821;
    margin-right: 4px;
    padding: 4px 8px;
}
.wp-paginate a {
    background: #a3a3a3;
    border: 1px solid #ccc;
    color: #666;
    margin-right: 4px;
    padding: 4px 8px;
    text-align: center;
    text-decoration: none;
}