IMPORTANT!!! IMPORTANT!!! OnionPatcher is no longer being activly developed as it's own thing but is instead integrated and maintained by @Etiam as a modular/opt-in feature in his MaterialColor mod. The full source of the latest OnionPatcher (post-merge, warning dirt simple code) here This was a mutual decision (I asked) so that we can avoid merges and that we can have a better and more developer supporting the features. I hope you all understand...   IMPORTANT!!! The c