git clone https://github.com/neoangelism/oxocarbon-helix.git
  cd oxocarbon-helix
  mkdir ~/.config/helix/themes && cp ./oxocarbon.toml ~/.config/helix/themes/oxocarbon.toml

Then, set the theme by editing your Helix config file:

  hx ~/.config/helix/config.toml

and adding:

  theme = "oxocarbon"

to it.

If you have any suggestions that could make this theme work better within Helix, please fork the repo and create a pull request. This theme was made on a whim and I may have missed something. I'd appreciate any contributions. Thank you! :)