vue-select/src/scss/modules/_dropdown-option.scss

/* List Items */
.vs__dropdown-option {
  line-height: 1.42857143; /* Normalize line height */
  display: block;
  padding: 3px 20px;
  clear: both;
  color: #333; /* Overrides most CSS frameworks */
  white-space: nowrap;
  cursor: pointer;
}

.vs__dropdown-option--highlight {
  background: $vs-state-active-bg;
  color: $vs-state-active-color;
}

.vs__dropdown-option--disabled {
  background: inherit;
  color: $vs-state-disabled-color;
  cursor: inherit;
}