Style the Purchase button

The Purchase button style has a button CSS class and is determined by your WP theme chosen. You can customize it by adding these code to your Additional CSS section in the theme customizing:

.button.ethereum-ico-bottom-button-two {
    background-color: #ffd600;
    color: #ffffff;
}
.button.ethereum-ico-bottom-button-two:hover {
    background-color: #ffd6ff;
    color: #ffffff;
}