PrimaryBody and SecondaryBody colors for theme

For my project I am currently writing a style for RadioButton that is styled as a ChoiceChip (https://material.io/components/chips#choice-chips)
Currently I have the following result:

As you can see the light theme is nice, but unfortunately the foreground color of the dark theme does not have enough contrast.
The problem is that for light theme I need the foreground to be PrimaryHueDarkBrush, but for the dark theme it must be PrimaryHueLightBrush. (Same for Secondary)
I currently think the best way to achieve this is by introducing a PrimaryBody and SecondaryBody color to the theme. The naming because it reacts in a similar way as currently the MaterialDesignBody color does.

I am willing to look into creating a PR with the necessary changes if you also see this as a good solution. Otherwise I hope you can come up with a better solution to fix this issue.

首先检查 PrimaryHueDarkBrush、PrimaryHueLightBrush、Secondary 颜色和 MaterialDesignBody 现有的主题颜色行为。跟踪设置为 ChoiceChip 样式的 RadioButton 如何在浅色和深色主题中选择前景色，然后验证所提出的 PrimaryBody 和 SecondaryBody 行为是否能在两种主题中提供足够的对比度。