{
  color: {
    font: {
      primary: { value: "{color.core.black.value}" },
      secondary: {
        value: "{color.font.primary.value}",
        modify: [{
          type: "brighten",
          // See https://gka.github.io/chroma.js/#color-brighten
          // for definition of brighten
          amount: 1
        }]
      },
      tertiary: {
        // transitive transforms allow you to modify a modified reference
        value: "{color.font.secondary.value}",
        modify: [{
          // this will brighten the secondary value, which is a brightened version
          // of primary
          type: "brighten",
          amount: 1
        }]
      },
    }
  }
}