.ps-product__shopping .ps-btn.ps-btn--black {
    background-color: #f05d40 !important;
    border-color: #f05d40 !important;
    color: #000 !important;
}

.ps-product__shopping .ps-btn.ps-btn--black:hover {
    background-color: #222 !important;
    border-color: #222 !important;
    color: #fff !important;
}