default error bar color

In 0.61.0, when plotting a simple array with error bars, the default color of
the error bars is black, instead of being the same as the line/markers color,


I prefer them to be the same, especially since the default color for marker/line
is blue and a beginner may be surprised to see the different color.

This may be related to my last posting regarding the (default) marker edge

JC Hsu