metamask-extension/ui/app/css/itcss/components/account-dropdown.scss

.account-dropdown-name {
  font-family: 'DIN OT';
}

.account-dropdown-balance {
  color: $dusty-gray;
  line-height: 19px;
}

.account-dropdown-edit-button {
  color: $dusty-gray;
  font-family: "DIN OT";

  &:hover {
    color: $white;
  }
}