profile.css 

#profile-fields td.category {
  font-weight: bold;
}
#profile-fields tr.category-message {
  color: #999;
}
#profile-fields tr.category-populated {
  display: none;
}

Archivo

drupal-7.x/modules/profile/profile.css
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  1. 

  2. #profile-fields td.category {

  3.   font-weight: bold;

  4. }

  5. #profile-fields tr.category-message {

  6.   color: #999;

  7. }

  8. #profile-fields tr.category-populated {

  9.   display: none;

  10. }