Core: FAB - tweak fab label styles

Author: nolimits4web

src/core/components/fab/fab.less

@@ -222,10 +222,10 @@
 .fab-label {
   position: absolute;
   top: 50%;
-  padding: 4px 8px;
+  padding: 4px 12px;
   border-radius: 4px;
   background: #fff;
-  color: #666;
+  color: #333;
   white-space: nowrap;
   transform: translateY(-50%);
   pointer-events: none;