Playing with some traffic data in QGIS, output with the standard and slightly smarter labels from the toolboxes
trying to turn it into something slightly more interesting with an intensity glow
some intermediate glow grading
and fiddling with a ramp key.
Update 2018.02.23: QGIS 3.0 Girona has landed - Mac now has it's own Installer Package 👍 - but it's changed some things...