can't find CSS selector in Twist of Nature

Despite using FireBug and the built-in CSS inspector in Chrome, I have only been able to figure out how to change a few of the background colors. I'm missing something.
http://indichocolate.com

In attempting to change the gray background color of navigation links for categories like "dark chocolate", I found #navCatTabsWrapper, but setting its background-color to Red only appears to have changed the border of the tab? What's controlling that gray?

What am I missing?
Thanks in advance.

Look for
.menutable
line 242 of your stylesheet.

keneso, thanks.
That allowed me to change two rows of navigation buttons (top and bottom, the ones with "Dark Chocolate", "Samplers", etc. and also the row with "About us".
However, I can't find the selector that affects the middle row, including the "Home" and "Log in" button. I must be missing something obvious, but I can't find it using FireBug.

Line 223

.back li {
background-color: #535141;
border: 1px solid #C1C0BD;
float: left;
margin-left: 2px;
padding: 1px;
width: 24%;
}

I don't know the template, be careful it might be used somewhere else as well, so check your site after editing it.

Another way could be to change <ul class="back"> in your twist_of_nature/common/tpl_header.php in <ul class="whatEverName">, you should see it after <div id="navMain">; then you copy the above .back li, set your background, and change .back li to whatEverName li

Here's a technique I've used to track down otherwise difficult to find colour declarations in the stylesheet...

Using a colour-picker kind of tool, hover over the colour you're trying to change. The tool will tell you the exact hex code of the colour. Then just search your stylesheet to find all the places where that colour is declared. It's usually easy to figure out which one you need to change from that point, and anyway, you're often trying to change them all.

Rob