Under the customizer, I am unable to find where I can switch the little grey strip at bottom of submenu. Granted, I can change background color of submenu, but am looking to change gray at bottom. Where do I do that?
As it turns out, I did not add that one to the customizer. You would have to change this manually. The styling for this is found in the theme’s /css/menu.css file around line 120
.main-navigation ul li:hover > ul {
display: block;
padding:5px 5px 12px 5px;
background: #78a5b6;
border-bottom:4px solid #595a67;
border-radius:12px;
}