.umb-app-header {
    background-color: #000;
}

ul.sections {
    background-color: #000;
}

    ul.sections li>a:after {
        background-color: inherit;
    }

    ul.sections li.current {
        background-color: #f73232;
    }

        ul.sections>li.current>a {
            color: #fff;
        }