antd-theme-generator/node_modules/less/test/css/namespacing/namespacing-5.css

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

.my-navbar {
  background: rebeccapurple;
  val: output;
}
.another-navbar {
  background: rebeccapurple !important;
  border: 1px solid lightblue !important;
}
.another {
  background: black;
  border: 1px solid grey;
}