@selectize/selectize/dist/lib/bootstrap3/mixins/background-variant.less

Selectize is a jQuery-based custom <select> UI control. Useful for tagging, contact lists, country selectors, etc.

// Contextual backgrounds

.bg-variant(@color) {
  background-color: @color;
  a&:hover,
  a&:focus {
    background-color: darken(@color, 10%);
  }
}