vue-select/docs/.vuepress/components/CssVariables.vue

<template>
  <div style="background: #282c34; padding: 1rem; border-radius: 0.3rem">
    <v-select :options="countries" />
  </div>
</template>

<script>
import countries from '../data/countries.js'
export default {
  data: () => ({ countries }),
}
</script>

<style scoped>
>>> {
  --vs-controls-color: #664cc3;
  --vs-border-color: #664cc3;

  --vs-dropdown-bg: #282c34;
  --vs-dropdown-color: #cc99cd;
  --vs-dropdown-option-color: #cc99cd;

  --vs-selected-bg: #664cc3;
  --vs-selected-color: #eeeeee;

  --vs-search-input-color: #eeeeee;

  --vs-dropdown-option--active-bg: #664cc3;
  --vs-dropdown-option--active-color: #eeeeee;
}
</style>