Fix label issues.

services/web/public/stylesheets/core/_common-variables.less

@@ -861,8 +861,8 @@
 @btn-border-bottom-width: 2px; 
 
 @tag-border-radius: 0.25em;
-@tag-bg-color: inherit;
-@tag-bg-hover-color: inherit;
+@tag-bg-color: @label-default-bg;
+@tag-bg-hover-color: darken(@label-default-bg, 10%);
 
 @left-menu-width: 260px;
 @left-menu-animation-duration: 0.35s;