Add background color to menu hover

Hi, How can I add a solid colored background to menu items when hover? I want the same effect like in the colorway theme.

Where and how can I change the css? I am using the green color option

Thanks

 

Paste this code in Custom CSS
Appearance > Theme Option > Styling Option > Custom CSS

Code:

#menu .ddsmoothmenu li a:hover {
background:your color value;
}