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modus-themes
Highly accessible themes for GNU Emacs, conforming with the highest standard for colour contrast between background and foreground values (WCAG AAA).
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
I recall a video by Prot where he addressed this very thing in his modis vivendi & modis operendi themes, specifically where he toggles between the two. See https://github.com/protesilaos/modus-themes/blob/main/modus-themes.el, specifically function "modus-themes-after-load-theme-hook". Function "make-obsolete-variable" is used there to undefine all the attributes defined in the theme. HTH