For #ONI the no fuss single user #ActivityPub service, I wanted to migrate from my custom hodge-podge of JavaScript logic for building CSS themes from images, to something a little more credentialed and battle tested.
Then I looked over what the Material library would generate and I begun to reconsider.
Material is so unsipired, it defaults to such samey, generic norm-core color palettes that it's difficult to see any changes even between vastly different images.
I think I'll just improve my own algorithm because, frankly, I want more GeoCities and less Enterprise.
https://material-foundation.github.io/material-theme-builder/