Use white for custom data label color (close #8055)

css/65_data.css

@@ -198,15 +198,15 @@
     dominant-baseline: middle;
 }
 .layer-mapdata text.label {
-    fill: #ff26d4;
+    fill: #ddd;
 }
 .layer-mapdata text.label.hover,
 .layer-mapdata text.label.selected {
-    fill: #f6634f;
+    fill: #fff;
 }
 .layer-mapdata text.label-halo {
     opacity: 0.7;
     stroke: #000;
     stroke-width: 5px;
     stroke-miterlimit: 1;
-}
+}