You can force light themes instead and flip the colors in KWin. This will make text look worse than doing it in CSS, but it's basically free performance-wise.

You can force light themes instead and flip the colors in KWin. This will make text look worse than doing it in CSS, but it's basically free performance-wise. https://github.com/natask/kwin-effect-smart-invert https://github.com/natask/kwin-effect-smart-invert Aside from that, I found that using blue light safety glasses (e.g. Uvex) reduces the pain I get from white flashes significantly.