In order to be able to handle chat in a platform-agnostic way (beyond just strings), implement Adventure.

Adventure has implementations for all platforms we plan to support. (Fabric, Bukkit, and Sponge. It would be unneeded in the region generator.)

Advantages:

• Allows us to style and add rich components to chat messages in a platform-agnostic setting
• Adventure is a popular API, already being implemented by Paper. It would be useful (and familiar) to addon developers.

Disadvantages:

• We would depend on Adventure's platform implementations' updates to release our own updates.

Adventure's api seems kinda ehhhh to me. Are there any alternatives?

Also, here's another alternative that we could use (which is how I was planning to do it in my command rewrite): format modifiers. You'd be able to include something like %{grey} in a message to make it grey, then it'd be processed by a platform-specific utility and either made grey or have it stripped out.