You can start with this :
Customizer –> Additional CSS :
.mg-headwidget .mg-head-detail {
background: #ffa500;
}
.mg-headwidget .navbar-wp {
background: #ffa500;
}
.mg-headwidget .navbar-wp .navbar-nav > li > a:focus, .mg-headwidget .navbar-wp .navbar-nav > .active > a, .mg-headwidget .navbar-wp .navbar-nav > .active > a:hover, .mg-headwidget .navbar-wp .navbar-nav > .active > a:focus {
color: #fff;
background: #ffa500;
}
.mg-sidebar .mg-widget h6 {
background: #ffa500;
color: #fff;
}
.mg-wid-title {
border-color: #ffa500;
}
.mg-sidebar .mg-widget h6::before {
border-left-color: #ffa500;
border-color: transparent transparent transparent #ffa500;
}
a.newsup-categories.category-color-1 {
background: #ffa500;
}
.mg-latest-news .bn_title {
background-color: #ffa500;
}
.mg-latest-news .bn_title span {
border-left-color: #ffa500;
border-color: transparent transparent transparent #ffa500;
}