Reply To: Changing colors in menu

Dear PeteGoGetter,
Please add the given CSS code in Additional CSS.
Appearance > Customize > Additional CSS

.main-navigation ul li.current_page_item a,
.home-icon.front_page_on{
    background:#fff !important;
    color:blue !important;
}
.main-navigation ul li.current_page_item a:before{
    background:#fff;
}
.main-navigation ul li a:hover{
    background:blue !important;
    color:#fff;
}
.home-icon .fa{
color:blue !important;
}
.header-wrapper #site-navigation {
    border-bottom: 5px solid #fff;
}
.header-wrapper .main-navigation ul ul.sub-menu li > a, .header-wrapper .main-navigation ul ul.children li > a {
    background: blue;
}

Best Regards!