Somewhat related: textual-paint¹ which uses the same interaction library, and was recently discussed here². I'm noting this purely because I'm enjoying the increasing frequency of rich³/textual⁴ posts, it hints at a latent desire for computing closer to how I enjoy it ;)
¹ https://github.com/1j01/textual-paint
² https://news.ycombinator.com/item?id=36859880