chromium/tools/style_variable_generator/tests/preblend_colors_test.json5

{
  options: {
    CSS: {
      prefix: 'cros',
      preblend: true,
    },
  },
  colors: {
    bg_color: {
      light: "$white",
      dark: "$google_grey_900",
    },
    highlight_color_hover: {
      light: "rgba($black.rgb, 0.2)",
      dark: "rgba($white.rgb, 0.4)",
    },
    foo_color: {
      light: "blend($highlight_color_hover, $bg_color)",
      dark: "blend($highlight_color_hover, $bg_color)",
    },
    bar_color: "blend($highlight_color_hover, $bg_color)",
  },
  opacities: {
    disabled_opacity: 0.38,
  },
}