fix error on color undefined and trailing whitespace

src/services/map-service.js

@@ -384,7 +384,7 @@ const mapService = {
       switch (fieldType) {
       case 'list':
         if (currentValue) {
-          color = colors_style.colors ? colors_style.colors[currentValue] : null;
+          color = colors_style.colors && colors_style.colors[currentValue];
           opacity = colors_style.opacities && colors_style.opacities[currentValue];
         }
         break;