Changing nav tab hover state

Add to EXTRA.css
Code:
.navTabs .navTab.PopupClosed:hover
        {
            background-color: #176093;
        }

            .navTabs .navTab.PopupClosed .navLink:hover
            {
                color: #ffffff;
            }

Change the colours to suit.

For the links on the lower navigation bar for the selected tab, it's Style Properties -> Header and Navigation -> Selected Tab
 
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