Themes(kerbs): don't ask for colour of the tactile pavings if there are none

assets/layers/kerbs/kerbs.json

@@ -332,7 +332,12 @@
         "en": "The tactile paving is coloured {tactile_paving:colour}.",
         "nl": "De voelbare bestrating is {tactile_paving:colour} gekleurd."
       },
-      "condition": "_geometry:type=Point"
+      "condition": {
+        "and": [
+          "tactile_paving!=no",
+          "_geometry:type=Point"
+        ]
+      }
     },
     {
       "id": "kerb-height",
@@ -497,4 +502,4 @@
     "es": "un bordillo",
     "ca": "un kerb"
   }
-}
+}