How to change Navigation bar background color?

See here: https://www.aquoid.com/forum/viewtopic.php?f=4&t=144 . Replace the parameters for “background” with the colors that you wish.

Thanks for the quick reply Sayontan.

I am not very good at coding. Do you mean replacing 97caff in the following code to the color that I want?

#nav li a:hover, #nav li a:active,
    #nav a.highlighted, #nav a:active {
       background: #97caff url(url_for_the_highlighted_background_image) repeat-x top left;
    }

    #nav ul ul a.drop:hover,
    #nav ul ul :hover > a.drop,
    #nav a:hover,
    #nav ul ul a:hover,
    #nav :hover > a,
    #nav ul ul :hover > a {
       background: #97caff url(url_for_the_regular_background_image) repeat-x top left;
    }

Something like that. My guess is that you want the color to be the same as your wrapper background. So for you this will suffice:

#nav ul li a,
#nav ul ul a,
#nav ul ul a:visited,
#nav ul ul a.drop,
#nav ul ul a.drop:visited {
	background: #f0f0f0;
}

Follow the instructions for incorporating this into the theme options and replace #f0f0f0 with whatever you require.