clear up nav variables

docs/assets/css/bootstrap.css

@@ -310,8 +310,9 @@ h4,
 h5,
 h6 {
   margin: 0;
-  font-weight: bold;
-  color: #333333;
+  font-family: '';
+  font-weight: normal;
+  color: '';
   text-rendering: optimizelegibility;
 }
 h1 small,

less/navbar.less

@@ -233,9 +233,9 @@
 // Active nav items
 .navbar .nav .active > a,
 .navbar .nav .active > a:hover {
-  color: @navbarLinkColorHover;
+  color: @navbarLinkColorActive;
   text-decoration: none;
-  background-color: @navbarBackground;
+  background-color: @navbarLinkBackgroundActive;
 }
 
 // Dividers (basically a vertical hr)

less/variables.less

@@ -105,10 +105,12 @@
 
 
 
+
 // COMPONENT VARIABLES
 // --------------------------------------------------
 
 // Z-index master list
+// -------------------------
 // Used for a bird's eye view of components dependent on the z-axis
 // Try to avoid customizing these :)
 @zindexDropdown:          1000;
@@ -118,32 +120,46 @@
 @zindexModalBackdrop:     1040;
 @zindexModal:             1050;
 
+
 // Sprite icons path
+// -------------------------
 @iconSpritePath:          "../img/glyphicons-halflings.png";
 @iconWhiteSpritePath:     "../img/glyphicons-halflings-white.png";
 
+
 // Input placeholder text color
+// -------------------------
 @placeholderText:         @grayLight;
 
+
 // Hr border color
+// -------------------------
 @hrBorder:                @grayLighter;
 
+
 // Navbar
+// -------------------------
 @navbarHeight:                    40px;
 @navbarBackground:                @grayDarker;
 @navbarBackgroundHighlight:       @grayDark;
-@navbarLinkBackgroundHover:       transparent;
 
 @navbarText:                      @grayLight;
 @navbarLinkColor:                 @grayLight;
 @navbarLinkColorHover:            @white;
+@navbarLinkColorActive:           @navbarLinkColorHover;
+@navbarLinkBackgroundHover:       transparent;
+@navbarLinkBackgroundActive:      @navbarBackground;
+
 
 // Hero unit
+// -------------------------
 @heroUnitBackground:              #312f2e;
 @heroUnitHeadingColor:            @white;
 @heroUnitLeadColor:               @white;
 
+
 // Form states and alerts
+// -------------------------
 @warningText:             #c09853;
 @warningBackground:       #fcf8e3;
 @warningBorder:           darken(spin(@warningBackground, -10), 3%);
@@ -162,15 +178,19 @@
 
 
 
+
 // GRID
 // --------------------------------------------------
 
 // Default 940px grid
+// -------------------------
 @gridColumns:             12;
 @gridColumnWidth:         60px;
 @gridGutterWidth:         20px;
 @gridRowWidth:            (@gridColumns * @gridColumnWidth) + (@gridGutterWidth * (@gridColumns - 1));
 
+
 // Fluid grid
+// -------------------------
 @fluidGridColumnWidth:    6.382978723%;
 @fluidGridGutterWidth:    2.127659574%;