Highlight info cell.

services/web/public/stylesheets/app/editor.less

@@ -254,16 +254,20 @@
 
 .sl_references_search_hint {
 	position: absolute;
-	bottom: -22px;
+	bottom: -33px;
 	left: -1px;
 	right: 0px;
+	padding: 7px 2px;
 	text-align: center;
-	padding: 2px;
-	background: rgb(202, 214, 250);
-	border: 1px solid lightgray;
+	background: @state-info-text;
+	color: @state-info-bg;
 	box-shadow: 3px 3px 5px rgba(0,0,0,.2);
+	font-family: @font-family-sans-serif;
+	font-size: 13px;
+	font-weight: 600;
+
 	span {
-		color: black;
+		padding-left: 10px;
 	}
 }
 // -- References Search Modal --