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How to generate different color in one wind rose area of plotly js

can someone help me how to generate different color in one wind rose area of plotly js?
I am having hard time on solving different colors in one area because all I know is in every area of wind rose, it should have 1 color each area.
Below is the image on what I am trying to inform to all of you.

Unfortunately, you can only change the sector color trace by trace at the moment as in this graph / js.

Hi!@etienne, What dose the means about ‘c’ and ‘b’ in the legend ? And How to remove it ?
It seems like the wind rose is just an unfinished product. Many settings are invalid, such as legend fonts, and only show four directions.