Reply To: Adjust text/background color of product tabs

Hello,

Please add this code to the Theme Settings > Custom CSS > Global:

body .single-product-content .product-tabs-wrapper {
    background-color: black;
}
body .single-product-content .tabs li.active a {
    color: white;
}
body .single-product-content .tabs li a {
    color: white;
}

Best Regards