session-desktop/stylesheets/_mentions.scss

.member-list-container {
  margin: 0;
  padding: 0;

  max-height: 240px;
  overflow-y: scroll;

  .member-item {
    padding: 4px;
    user-select: none;

    &:hover:not(.member-selected) {
      background-color: $color-light-20;
    }

    background-color: $color-light-10;

    .name-part {
      font-weight: 300;
      margin-left: 6px;
    }

    .pubkey-part {
      margin-left: 6px;
    }
  }

  .member-selected {
    background-color: $color-light-35;
  }
}

.dark-theme {
  .member-list-container {
    .member-item {
      &:hover:not(.member-selected) {
        background-color: $color-dark-55;
      }

      background-color: $color-dark-70;

      color: white;
    }

    .member-selected {
      background-color: $color-dark-60;
    }
  }
}