diff --git a/README.md b/README.md
index f517df70..c2ce69f6 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,9 @@ for download under a liberal open data license
## Setup and run
+#### Forking the Core Repository
+If you are working with us as part of this GitHub organisation, then a repository and team may already have been set up for you. If you are already usign the repository and want to add a new project, perhaps because you are expanding to additional cities, then please following these instructions to create a Fork of the core repository: [docs/working-with-colouring-core](docs/working-with-colouring-core.md).
+
#### Customise the Application:
You can customise the Colouring Cities application by changing the values in the following file:
diff --git a/app/map_styles/polygon.xml b/app/map_styles/polygon.xml
index af6e0e0e..020a1052 100644
--- a/app/map_styles/polygon.xml
+++ b/app/map_styles/polygon.xml
@@ -623,6 +623,34 @@
+