Reply To: Editing the styles of the account menu.

Hello,

Please replace the previous Custom CSS with the following. This will surely change the colors.

.woocommerce-order-received strong.product-quantity {
    color: white;
}

.woocommerce-order-received span.woocommerce-Price-amount.amount {
    color: white;
}

If it still doesn’t help then provide with the admin panel login details of the website.

Best Regards