There are many themes, but this one is yours
Summary
The article explains Earendil's Pi system theme, which adapts to your terminal by deriving each color's lightness from contrast needs using perceptual color spaces (OKLCH and OKHSL). It covers how the reverse-contrast algorithm, hue preservation, chroma capping, and saturation falloff work to keep themes readable across backgrounds. It also provides a bug fix example and notes an intent to share an open source contrast algorithm and a user survey.