rules.json

{
  "colors": {
    "brand-palette": {
      "dark-red": {"red": 200, "green": 0, "blue": 0}
    }
  },
  "typefaces": {
    "logo": {
      "name": "Permanent Marker",
      "fallback": "Franklin Gothic Demi Cond, sans-serif"
    }
  }
}