I seem unable to override the default (gray) colour of the D3 brush.
Here's a snippet that I think should work:
d3.select(this.$el).select('#brush');
.style('fill', '#569fd5')
.call(brush.on('end', brushended));
I'm expecting to see a pale blue brush area, but it remains gray. The entire body of the brush is pale blue instead:
https://i.stack.imgur.com/ziKGk.png
My google-fu fails me here. Any ideas?