It’s a bug. As a workaround, next update to gnome-settings disables system colors for users that have not edited their settings.
Matcha theme just pushed a fix to this in their git repo, next update should do an actual fix.
I’ve marked the below answer as the solution to your question as it is by far the best answer you’ll get.
However, if you disagree with my choice, please feel free to take any other answer as the solution to your question or even remove the solution altogether: You are in control! (I just want to avoid even more subjective opinions being posted and confusing you even more)
P.S. In the future, please mark a solution like this:
so that the next person that has the exact same problem you just had will benefit from your post as well as your question will now be in the “solved” status.