anchor.diff:      &, .dropdown-menu {
         background-color: $primary_color;
         border-color:     $primary_border;
  -      color:            $primary_color;
  -
  -      .media {
  +      border-top:       none;
  +      color:            $primary_text;
  +
  +      .media, .dropdown-header {
           color: $primary_text;
         }
   
  
positive.code:     left:       0;
      right:      0;
      bottom:     0;
      background: $primary_border;
  
      img {
        opacity: 0;
  
negative.code: // LEGEND
  
  // TYPE_COLOR:  BACKGROUND COLOR
  