Nyall Dawson 16e98f205a Default to a dark gray instead of black for symbol outlines
Avoiding the very high constrast pure black results in cartographically
more pleasing styles, so it's nice to do this by default.

This should result in nicer looking maps being created in QGIS
when users don't do any manual style tweaks.
2018-02-02 15:59:13 +10:00
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