Pie text colors don't restyle/react

[alexcjohnson]

See https://codepen.io/alexcjohnson/pen/jeogoy?editors=0010 - this edits titlefont.color, and you can see that it doesn't change from red to yellow as it should via react. The same is true via restyle, and of (inside|outside)textfont.color.

Thanks @nicolaskruchten!

Looks like pie overrides the text color editType:

plotly.js/src/traces/pie/attributes.js

Line 21 in 1819584

colorEditType: 'style',

But these colors are set during Pie.plot, not Pie.style.

[alexcjohnson]

bar edits these colors correctly, but I notice it does so just by leaving the text font properties as calc edits. It's important that family and size be calc (or perhaps plot?) for both of these types, because whether the text goes inside or outside can depend on its size relative to the bars as drawn... but color should be able to be moved to style. The challenge is just figuring out which font to use - it might not be obvious whether the text you're styling is inside or outside.