different background color of the submenu on the different pages

Hello Kriesi,

I would like to change the backgrond color of the submenu on different pages.
So I found this code:

#top .main_menu .menu ul li a:hover { background-color: red; } /* changes the background color of submenu item on hover */
#top .main_menu .menu ul li a { color: green; background-color: orange; } /* changes the color and background color of submenu items */

And before the code i place: .page-id-3385 .

But that didn’t work :(

How can I fix that?

————
(for example I would like:
on page-id-3385 Black background color of the submenu and a hover: yellow
and
on page-id-1234 Yellow background color of the submenu and a hover: black
————-
Many thanks