Sorry, must be a very naive question, but what if you give LLM just a source code (maybe even obfuscate the names like Raft and Etcd) and ask it to create a TLA+ spec of that?
You mileage may vary but in my (unfortunate) experience, stuffing up by any other reason than grassroots "we need more hands" raised by engineers themselves typically backfires. Teams that are constrained by people resources often find creative ways to work smarter. Teams that have an abundance of labor, often end up working unnecessarily harder, duplicating work, reinventing the wheel, not solving the right problems, etc. See also intensive vs extensive development.
so is there a formula that can be automatically applied to restore the original colors? at least some reasonable approximation, based on the painting's age?