Menu – Hover Color

I need to know how to change the hover color on the nav menu
(without gobs of complicated code -this should be a simple color code change) where do i find it to change it?
Also on my pages, the hover is “sticking” to the tab selected and staying put there and a new hover box appears as you navigate the menu to select another page.
Need to know how to fix this as well.
I have worked within the HTML editor of a lot of WordPress themes and this is by far the hardest to navigate on the back end unless you are a coding genius.
Thanks!