Hi, I was wondering if anyone knows how to set a color on a radar chart's background based on the categories and segments? I've googled all the way till page 3 and has found nothing that helps to achieve what I wanted.

I've tried a couple of forums but the ones I've visited seems to be deserted, so I hope someone here can help me.

Heres what I wanted my radar chart to look like:
1535964074658.jpg

Note that the colors changes midway between the assigned values.