antd-theme-generator/node_modules/less/test/less-bom/mixins-closure.less

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

.scope {
    @var: 99px;
    .mixin () {
        width: @var;
    }
}

.class {
    .scope > .mixin;
}

.overwrite {
    @var: 0px;
    .scope > .mixin;
}

.nested {
    @var: 5px;
    .mixin () {
        width: @var;
    }
    .class {
        @var: 10px;
       .mixin;
    }
}