Hi,
To change the hover/active color of main menu
Go to the Appearance -> Theme Options -> Basic Settings -> Custom CSS
add below css code
.sitenav ul li a:hover, .sitenav ul li.current_page_item a, .sitenav ul li.current_page_item ul li a:hover, .sitenav ul li.current-menu-parent a, .sitenav ul li:hover, .sitenav ul li.current_page_item ul.sub-menu li a:hover, .sitenav ul li.current-menu-parent ul.sub-menu li a:hover, .sitenav ul li.current-menu-parent ul.sub-menu li ul.sub-menu li a:hover, .sitenav ul li.current-menu-parent ul.sub-menu li.current_page_item a { color: #73b844 !important; }
Pleas do this change and let me know if you are getting any problem.
Regards
Grace Themes