[Theme:Expound] Please explain navbar code more?

Hello, there was another post that told people how to customize the Expound them. However, I’m not sure if it answers my question.

I want all of these to be a different color (except visited and hover):

–Navigation bar background
–Navigation text
–Navigation hover & visited (same colors when mousing over navigation item or after visting navigation item)
–Navigation current (current page)

I’m not sure what the code that was presented there is supposed to do. How does the following accomplish what I want above?

Here is what I found:

.navigation-main {
background: #0e123d !important;
}

.navigation-main a {
background: #0e123d !important;
}

.navigation-main ul > .current_page_item a:after, .navigation-main ul > .current-menu-item a:after, .navigation-main ul > .current-post-ancestor a:after, .navigation-main ul > .current-menu-parent a:after, .navigation-main ul > .current-post-parent a:after {
border-top: 6px solid #0e123d !important;
}

I have no idea which one is the hover, the visited and the navbar background. I also need each “List item” to be the same color as the overall navbar background — not different.

Julie