Welcome to the forums.
Those are some pretty good notices. I'll try to have a more detailed look tomorrow.
You've discovered some of the important drawbacks of High Contrast.
Originally Posted by split
1. Unfortunately not all programs are able to use High Contrast correctly.
2. The Text highlight color is INVERTED (!) The automatic color is the main theme's text color - but colored text should remain properly colored (tested on my HC Daybreak and Night Mode) But I also didn't find a checkbox regarding the Office theme behaviour.
3. This one should be chosen wisely; some of the changes affect multiple items: in this case either one looks good and the other one bad or both half good but visible. The only fix I could quickly come up with is a compromise between the two. But I agree, open programs aren't visible at all... may require some extra testing.
Regarding point 2: Office; some of the colors/inversions may behave differently depending on the High Contrast base theme.
For instance I created most of my themes based on the built in High Contrast Black. If you create some themes based on other High Contrast types*, like White, you may expect different outcomes. But still, High Contrast in Office needs some getting used to, especially the default text and backgrounds + print preview...
*black is equal to 3 in the theme ini:
Thanks again for posting.
Any new themes/findings will be added in this thread.