Dropdown caret color in variable

app/assets/stylesheets/framework/dropdowns.scss

@@ -4,7 +4,7 @@
   height: 0;
   margin-left: 2px;
   vertical-align: middle;
-  border-top: $caret-width-base dashed;
+  border-top: $caret-width-base dashed $dropdown-caret-color;
   border-right: $caret-width-base solid transparent;
   border-left: $caret-width-base solid transparent;
 }

app/assets/stylesheets/framework/variables.scss

@@ -137,3 +137,4 @@ $dropdown-border-color: rgba(#000, .1);
 $dropdown-shadow-color: rgba(#000, .1);
 $dropdown-divider-color: rgba(#000, .1);
 $dropdown-header-color: #959494;
+$dropdown-caret-color: #54565B;