Doesn't support [syntax highlighting colors](https://fishshell.com/docs/current/index.html#variables-color)

[Jake-Gillberg]

Fish syntax highlighting colors are not set.

base16-fish-gruvbox supports this.

See https://github.com/tomyun/base16-fish (esp. https://github.com/tomyun/base16-fish/blob/master/functions/base16-gruvbox-dark-medium.fish) for examples on how to implement.

[Jomik]

I have not needed this myself yet, but please open a PR with this and I will accept it! 🙏

[Jake-Gillberg]

I have been ripped away from my beloved development environment by a new job, so I am unlikely to create this pull request anytime soon, leaving this here in case someone else wants to take on the work. Feel free to close if you want!