Improve UX styles

Author: enriquei4

app/code/Magento/Swatches/view/adminhtml/web/css/swatches.css

@@ -3,9 +3,12 @@
  * See COPYING.txt for license details.
  */
 
+#swatch-visual-options-panel{
+    overflow: visible;
+}
+
 .swatch_sub-menu_container {
-    margin-top: 3px;
-    overflow: auto;
+    position: absolute;
     z-index: 9999;
     width: 140px;
     display: none;