select.orderby,
.woocommerce-ordering select,
.woocommerce .woocommerce-ordering select {
    color: #ffffff !important;
    background-color: #111111 !important;
    border-color: #d4af37 !important;
}

select.orderby option,
.woocommerce-ordering select option,
.woocommerce .woocommerce-ordering select option {
    color: #ffffff !important;
    background-color: #111111 !important;
}