Submenu background color doesn't display

try adding your hover background color to line 479 in your stylesheet style.css.

Try to avoid editing the theme’s files if possible.
You’ll only lose those modifications when the theme updates.

Download & install this Custom CSS Manager plugin and use its allocated section of the dashboard to hold this;

a, #access ul ul :hover > a {
 background: #79a90c !important;
}

You’re having to use !important because there’s this CSS style;

a:hover {
 background-color: none !important;
 background: none !important;
}

Thank you!

I added background color to line 479 and it worked.

How do I get the main menus to change color when I hover over them?

I didn’t go with the other option as I’ve already made a buch of other modification to the theme’s files and I don’t plan to do theme updates. (Hope that isn’t a bad idea)

Andrew’s code fixed the main menus too.

a, #access ul ul :hover > a {
background: #79a90c !important;
}

Thank you both!

Good idea about the Custom CSS Manager, Andrew.