Reply To: Change the Header color on scroll, and change the mobile Header color

Hello,

01. I have checked your site. The sticky header background color is already black and the icons are in white colors.
https://ibb.co/CJjV4RS

02. For the mobile header, add the below Custom CSS code to Theme Settings > Custom CSS > Custom CSS for Mobile section

.whb-color-dark:not(.whb-with-bg) {
    background-color: #020202 !important;
}
.wd-header-cart .wd-tools-icon.wd-icon-alt:before {
    color: white;

}
.wd-header-mobile-nav .wd-tools-icon:before {
    color: white;
}

Best Regards