Quick project I hacked together last night: https://hexdocs.pm/open_props/index.html
If you are unfamiliar with it, https://open-props.style is a token design system something like tailwind but standards compliant. It's basically a collection of css variables crafted by one of the most passionate contributors to the ever-evolving css specifications.
My project just wraps those variables in constants so it has gleam-powered autocompletions in your editor. It's a great complement to https://hexdocs.pm/sketch/ if you use it.