Your child theme has a background color set on the nav menu is that is overriding the Styles setting because of higher CSS selector specificity.
Here’s a screenshot of how to find that in Chrome by right clicking on your menu, then selecting “Inspect Element”.
The code in your child theme that’s doing this is in styles.css lines 72-77:
.main-navigation ul.nav-menu {
background: none repeat scroll 0 0 #F0942C;
border: 0 none;
padding: 0 0 0 0px;
text-align: center;
}
Either edit the color manually there, or fix the Styles conflict by changing ul.nav-menu
to .main-navigation ul.nav-menu
in plugins/styles-twentytwelve/customize.json
, then re-saving.
Thanks, I was looking in the wrong place, all sorted now.