New update changed how my CSS targets new/unread topic background colors and I don't know how to fix it

Development
4

Recently, new color variables were added.
https://github.com/discourse/discourse/commit/20f57aec12a5d2291c79a447d18eb3f164877c61

I think this added, for example, the background color on visited topics:

Screenshot_20250710_160842_Firefox
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