MediaWiki:Foreground.css

/* Custom Foreground menubar colors */
.top-bar,
.top-bar .title-name,
.top-bar-section ul,
.top-bar-section ul li.active > a,
.top-bar-section li a:not(.button),
.top-bar-section .has-form {
   background: 	#CCCCFF;
   color: #444;
}

.top-bar-section > ul > .divider,
.top-bar-section > ul > [role="separator"] {
  border-color: 	#CCCCFF;
  color: #444;
}

/* Darker color for the hover over items */
.top-bar-section ul li.hover > a,
.top-bar-section ul li ul.dropdown li.hover > a {
    background: #A9A9D6;
    color: #444;
}

/* Slightly darker color for the dropdowns */
.top-bar-section ul li ul.dropdown li > a {
    background: #CCCCFF;
    color: #444;
}