Merge branch 'fix/mvt-icon' into 'develop'

test FIX MVT icons

See merge request !240

src/assets/js/map-util.js

@@ -311,6 +311,10 @@ const mapUtil = {
           const featureType = featureTypes.find((x) => x.slug.split('-')[0] === '' + properties.feature_type_id);
 
           const color = this.retrieveFeatureColor(featureType, properties);
+          const colorValue =
+          color.value && color.value.length ?
+            color.value : typeof color === 'string' && color.length ?
+              color : '#000000';
 
           // Look for a custom field
           let customField;