Reply To: Classe for primary buttons

Hello,

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

body button.configure-product.configure-product-simple {
    background-color: yellow;
    color: red;
    margin-bottom: 10px;
}
body button.configure-product.configure-product-simple:hover {
    background-color: orange;
    color: red;
    margin-bottom: 10px;
}

Please set the colors as per your needs. The first snipped is for the default button state, the second is for the hover state.

Best Regards