Add a .navbar-default class for default colors

* Extract color styles from .navbar { } and put them into
.navbar-default { }
* Change variable names
* Change the docs accordingly (i.e., add the .navbar-default class to
all default navbars)
* Change customizer accordingly

dist/css/bootstrap.css

@@ -3942,8 +3942,7 @@ textarea.input-group-sm > .input-group-btn > .btn {
   position: relative;
   min-height: 50px;
   margin-bottom: 20px;
-  background-color: #f8f8f8;
-  border: 1px solid #e7e7e7;
+  border: 1px solid transparent;
 }
 
 .navbar:before,
@@ -4003,7 +4002,7 @@ textarea.input-group-sm > .input-group-btn > .btn {
   padding-right: 15px;
   padding-left: 15px;
   overflow-x: visible;
-  border-top: 1px solid #e6e6e6;
+  border-top: 1px solid transparent;
   box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
   -webkit-overflow-scrolling: touch;
 }
@@ -4106,14 +4105,11 @@ textarea.input-group-sm > .input-group-btn > .btn {
   padding: 15px 15px;
   font-size: 18px;
   line-height: 20px;
-  color: #777777;
 }
 
 .navbar-brand:hover,
 .navbar-brand:focus {
-  color: #5e5e5e;
   text-decoration: none;
-  background-color: transparent;
 }
 
 @media (min-width: 768px) {
@@ -4130,20 +4126,14 @@ textarea.input-group-sm > .input-group-btn > .btn {
   margin-right: 15px;
   margin-bottom: 8px;
   background-color: transparent;
-  border: 1px solid #dddddd;
+  border: 1px solid transparent;
   border-radius: 4px;
 }
 
-.navbar-toggle:hover,
-.navbar-toggle:focus {
-  background-color: #dddddd;
-}
-
 .navbar-toggle .icon-bar {
   display: block;
   width: 22px;
   height: 2px;
-  background-color: #cccccc;
   border-radius: 1px;
 }
 
@@ -4165,27 +4155,6 @@ textarea.input-group-sm > .input-group-btn > .btn {
   padding-top: 10px;
   padding-bottom: 10px;
   line-height: 20px;
-  color: #777777;
-}
-
-.navbar-nav > li > a:hover,
-.navbar-nav > li > a:focus {
-  color: #333333;
-  background-color: transparent;
-}
-
-.navbar-nav > .active > a,
-.navbar-nav > .active > a:hover,
-.navbar-nav > .active > a:focus {
-  color: #555555;
-  background-color: #e7e7e7;
-}
-
-.navbar-nav > .disabled > a,
-.navbar-nav > .disabled > a:hover,
-.navbar-nav > .disabled > a:focus {
-  color: #cccccc;
-  background-color: transparent;
 }
 
 @media (max-width: 767px) {
@@ -4204,26 +4173,11 @@ textarea.input-group-sm > .input-group-btn > .btn {
   }
   .navbar-nav .open .dropdown-menu > li > a {
     line-height: 20px;
-    color: #777777;
   }
   .navbar-nav .open .dropdown-menu > li > a:hover,
   .navbar-nav .open .dropdown-menu > li > a:focus {
-    color: #333333;
-    background-color: transparent;
     background-image: none;
   }
-  .navbar-nav .open .dropdown-menu > .active > a,
-  .navbar-nav .open .dropdown-menu > .active > a:hover,
-  .navbar-nav .open .dropdown-menu > .active > a:focus {
-    color: #555555;
-    background-color: #e7e7e7;
-  }
-  .navbar-nav .open .dropdown-menu > .disabled > a,
-  .navbar-nav .open .dropdown-menu > .disabled > a:hover,
-  .navbar-nav .open .dropdown-menu > .disabled > a:focus {
-    color: #cccccc;
-    background-color: transparent;
-  }
 }
 
 @media (min-width: 768px) {
@@ -4259,8 +4213,8 @@ textarea.input-group-sm > .input-group-btn > .btn {
   margin-right: -15px;
   margin-bottom: 8px;
   margin-left: -15px;
-  border-top: 1px solid #e6e6e6;
-  border-bottom: 1px solid #e6e6e6;
+  border-top: 1px solid transparent;
+  border-bottom: 1px solid transparent;
   -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 1px 0 rgba(255, 255, 255, 0.1);
           box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 1px 0 rgba(255, 255, 255, 0.1);
 }
@@ -4318,31 +4272,6 @@ textarea.input-group-sm > .input-group-btn > .btn {
   border-bottom-left-radius: 0;
 }
 
-.navbar-nav > .dropdown > a:hover .caret,
-.navbar-nav > .dropdown > a:focus .caret {
-  border-top-color: #333333;
-  border-bottom-color: #333333;
-}
-
-.navbar-nav > .open > a,
-.navbar-nav > .open > a:hover,
-.navbar-nav > .open > a:focus {
-  color: #555555;
-  background-color: #e7e7e7;
-}
-
-.navbar-nav > .open > a .caret,
-.navbar-nav > .open > a:hover .caret,
-.navbar-nav > .open > a:focus .caret {
-  border-top-color: #555555;
-  border-bottom-color: #555555;
-}
-
-.navbar-nav > .dropdown > a .caret {
-  border-top-color: #777777;
-  border-bottom-color: #777777;
-}
-
 .navbar-nav.pull-right > li > .dropdown-menu,
 .navbar-nav > li > .dropdown-menu.pull-right {
   right: 0;
@@ -4358,7 +4287,6 @@ textarea.input-group-sm > .input-group-btn > .btn {
   float: left;
   margin-top: 15px;
   margin-bottom: 15px;
-  color: #777777;
 }
 
 @media (min-width: 768px) {
@@ -4368,11 +4296,120 @@ textarea.input-group-sm > .input-group-btn > .btn {
   }
 }
 
-.navbar-link {
+.navbar-default {
+  background-color: #f8f8f8;
+  border-color: #e7e7e7;
+}
+
+.navbar-default .navbar-brand {
   color: #777777;
 }
 
-.navbar-link:hover {
+.navbar-default .navbar-brand:hover,
+.navbar-default .navbar-brand:focus {
+  color: #5e5e5e;
+  background-color: transparent;
+}
+
+.navbar-default .navbar-text {
+  color: #777777;
+}
+
+.navbar-default .navbar-nav > li > a {
+  color: #777777;
+}
+
+.navbar-default .navbar-nav > li > a:hover,
+.navbar-default .navbar-nav > li > a:focus {
+  color: #333333;
+  background-color: transparent;
+}
+
+.navbar-default .navbar-nav > .active > a,
+.navbar-default .navbar-nav > .active > a:hover,
+.navbar-default .navbar-nav > .active > a:focus {
+  color: #555555;
+  background-color: #e7e7e7;
+}
+
+.navbar-default .navbar-nav > .disabled > a,
+.navbar-default .navbar-nav > .disabled > a:hover,
+.navbar-default .navbar-nav > .disabled > a:focus {
+  color: #cccccc;
+  background-color: transparent;
+}
+
+.navbar-default .navbar-toggle {
+  border-color: #dddddd;
+}
+
+.navbar-default .navbar-toggle:hover,
+.navbar-default .navbar-toggle:focus {
+  background-color: #dddddd;
+}
+
+.navbar-default .navbar-toggle .icon-bar {
+  background-color: #cccccc;
+}
+
+.navbar-default .navbar-collapse,
+.navbar-default .navbar-form {
+  border-color: #e6e6e6;
+}
+
+.navbar-default .navbar-nav > .dropdown > a:hover .caret,
+.navbar-default .navbar-nav > .dropdown > a:focus .caret {
+  border-top-color: #333333;
+  border-bottom-color: #333333;
+}
+
+.navbar-default .navbar-nav > .open > a,
+.navbar-default .navbar-nav > .open > a:hover,
+.navbar-default .navbar-nav > .open > a:focus {
+  color: #555555;
+  background-color: #e7e7e7;
+}
+
+.navbar-default .navbar-nav > .open > a .caret,
+.navbar-default .navbar-nav > .open > a:hover .caret,
+.navbar-default .navbar-nav > .open > a:focus .caret {
+  border-top-color: #555555;
+  border-bottom-color: #555555;
+}
+
+.navbar-default .navbar-nav > .dropdown > a .caret {
+  border-top-color: #777777;
+  border-bottom-color: #777777;
+}
+
+@media (max-width: 767px) {
+  .navbar-default .navbar-nav .open .dropdown-menu > li > a {
+    color: #777777;
+  }
+  .navbar-default .navbar-nav .open .dropdown-menu > li > a:hover,
+  .navbar-default .navbar-nav .open .dropdown-menu > li > a:focus {
+    color: #333333;
+    background-color: transparent;
+  }
+  .navbar-default .navbar-nav .open .dropdown-menu > .active > a,
+  .navbar-default .navbar-nav .open .dropdown-menu > .active > a:hover,
+  .navbar-default .navbar-nav .open .dropdown-menu > .active > a:focus {
+    color: #555555;
+    background-color: #e7e7e7;
+  }
+  .navbar-default .navbar-nav .open .dropdown-menu > .disabled > a,
+  .navbar-default .navbar-nav .open .dropdown-menu > .disabled > a:hover,
+  .navbar-default .navbar-nav .open .dropdown-menu > .disabled > a:focus {
+    color: #cccccc;
+    background-color: transparent;
+  }
+}
+
+.navbar-default .navbar-link {
+  color: #777777;
+}
+
+.navbar-default .navbar-link:hover {
   color: #333333;
 }
 
@@ -6560,4 +6597,4 @@ td.visible-print {
   td.hidden-print {
     display: none !important;
   }
-}
+}