Minor nit - the colours on the legend don&#x27;t match the colours on the map due to the transparency.  It&#x27;s most obvious in the greyscale when the 30min ring has the same shade as the 15min legend.<p>e.g. <a href="https:&#x2F;&#x2F;rjp.is&#x2F;tmp&#x2F;mapshades.png" rel="nofollow">https:&#x2F;&#x2F;rjp.is&#x2F;tmp&#x2F;mapshades.png</a>