antd-theme-generator/node_modules/less/test/less-bom/namespacing/namespacing-7.less

This a script to generate color specific styles less file and which you can use to change theme dynamically in browser

#ns {
  .options() {
    option: true;
  }
}

@ns: {
  @options: {
    option: true;
  };
};

& when (#ns.options[option]) {
  .output {
    a: b;
  }
}

& when (#ns.options[option] = true) {
  .output-2 {
    c: d;
  }
}

& when (#ns.options[option] = false) {
  .no-reach {
    c: d;
  }
}

// DR access
& when (@ns[@options][option]) {
  .dr {
    a: b;
  }
}

& when (@ns[@options][option] = true) {
  .dr-2 {
    c: d;
  }
}

& when (@ns[@options][option] = false) {
  .dr-no-reach {
    c: d;
  }
}