Frame Colors High / Low

[avalon60]

Hi.

I am trying to work out the correlation between the color properties (CTkFrame.configure) and how they relate to the respective theme JSON attributes. In particular I am trying to understand what is happening with the colours below. I am using a TestCard theme to demonstrate the context (my taste may be bad but it's not that bad ;). Hopefully you can see that I have frames within frames. So the frame_low and the frame_high colours are quite distinct here (lilac and pink).

So it appears as though the Theme Manager in customkinter, is automatically switching the fg_color of a frame from high to low, when a child frame is rendered within it. Is this a correct observation and is this the expected behaviour?