clean up use of mixins to highlight them appropriately in your fav editor

less/button-groups.less

@@ -6,7 +6,7 @@
 .btn-group {
   position: relative;
   .clearfix(); // clears the floated buttons
-  .ie7-restore-left-whitespace;
+  .ie7-restore-left-whitespace();
 }
 
 // Space out series of button groups
@@ -18,7 +18,7 @@
 .btn-toolbar {
   .btn-group {
     display: inline-block;
-    .ie7-inline-block;
+    .ie7-inline-block();
   }
 }
 

less/buttons.less

@@ -55,7 +55,7 @@
   .box-shadow(@shadow);
   cursor: pointer;
 
-  .ie7-restore-left-whitespace;
+  .ie7-restore-left-whitespace();
 
   &:hover {
     color: @grayDark;

less/forms.less

@@ -377,7 +377,7 @@ select:focus:required:invalid {
 
 .help-inline {
   display: inline-block;
-  .ie7-inline-block;
+  .ie7-inline-block();
   margin-bottom: 9px;
   vertical-align: middle;
   padding-left: 5px;

less/navbar.less

@@ -76,7 +76,7 @@
     #font > .sans-serif(13px, normal, 1);
     color: @white;
     color: rgba(255,255,255,.75);
-    background: #6a6a6a;
+    background: #666;
     background: rgba(255,255,255,.3);
     border: 1px solid #111;
     @shadow: inset 0 1px 2px rgba(0,0,0,.1), 0 1px 0px rgba(255,255,255,.15);

less/sprites.less

@@ -22,7 +22,7 @@
   width: 14px;
   height: 14px;
 
-  .ie7-restore-right-whitespace;
+  .ie7-restore-right-whitespace();
 }
 .icon.white {
   background-image: url(../img/glyphicons-halflings-white.png);