Could "None" be represented by another colour (such as lime)? I found lavender prevails the map and it's difficult to find grey, which looks similar. -- Patrickov (talk) 09:56, 7 July 2009 (UTC)
This picture is terrible and is impossible for someone with colour vision issues! John —Preceding unsigned comment added by 207.47.35.244 (talk) 22:13, 15 September 2009 (UTC)