diff --git a/examples/data/geojson/test.geojson b/examples/data/geojson/test.geojson
new file mode 100644
index 0000000000..6930112150
--- /dev/null
+++ b/examples/data/geojson/test.geojson
@@ -0,0 +1,108 @@
+{
+  "type": "FeatureCollection",
+  "features": [{
+      "type": "Feature",
+      "id": "11002A05-",
+      "properties": {
+
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [
+              489499,
+              6658893
+            ],
+            [
+              489828,
+              6659895
+            ],
+            [
+              489874,
+              6659829
+            ],
+            [
+              490023,
+              6659585
+            ],
+            [
+              490056,
+              6659433
+            ],
+            [
+              489918,
+              6658824
+            ],
+            [
+              489499,
+              6658893
+            ]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "11002A04-",
+      "properties": {
+
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [
+              489828,
+              6659895
+            ],
+            [
+              489971,
+              6659886
+            ],
+            [
+              490249,
+              6659849
+            ],
+            [
+              490336,
+              6659615
+            ],
+            [
+              490401,
+              6658929
+            ],
+            [
+              490173,
+              6658879
+            ],
+            [
+              489945,
+              6658746
+            ],
+            [
+              489918,
+              6658824
+            ],
+            [
+              490056,
+              6659433
+            ],
+            [
+              490023,
+              6659585
+            ],
+            [
+              489874,
+              6659829
+            ],
+            [
+              489828,
+              6659895
+            ]
+          ]
+        ]
+      }
+    }
+  ]
+}
diff --git a/examples/icon-color.html b/examples/icon-color.html
index cfa6e4e213..04a98626de 100644
--- a/examples/icon-color.html
+++ b/examples/icon-color.html
@@ -3,7 +3,8 @@ layout: example.html
 title: Icon Colors
 shortdesc: Example assigning a custom color to an icon
 docs: >
-  Example assigning a custom color to an icon. The features in this examples are all using the same image with the different colors coming from the javascript file
+  Example assigning a custom color to an icon. The features in this examples are all using the same image with the different colors coming from the javascript file.
+  Note that icon files need to obey the same origin policy or send proper CORS headers for this to work. When relying on CORS headers, the `ol.style.Icon` must be configured with `crossOrigin: 'anonymous'`.
 tags: "vector, style, icon, marker"
 resources:
 ---