Configurable pie chart slice color (& other styling)

[getaaron]

Is your feature request related to a problem? Please describe.

I want to be able to configure the styling of pie chart, especially the slice color.

Color

Looks like the color is hardcoded (obtained via d3 somehow) and does not appear to be configurable:

mermaid/src/diagrams/pie/pieRenderer.js

Lines 73 to 75 in b23988c

	var color = scaleOrdinal()
	.domain(data)
	.range(schemeSet2);

mermaid/src/diagrams/pie/pieRenderer.js

Lines 95 to 97 in b23988c

	.attr('fill', function(d) {
	return color(d.data.key);
	})

Font Size

Same with the font size:

mermaid/src/diagrams/pie/pieRenderer.js

Line 116 in b23988c

.style('font-size', 17);

Others

• font
• stroke color
• stroke width

Describe the solution you'd like

A documented way to apply styles to a pie chart which works in the live editor

Describe alternatives you've considered

None

Additional context

None