I know the soul gems in Morrowind definitely showed the NPC name because some characters would build collections of grand soul gems with the named sixth house priests. I really wish the feature wasn't removed in Skyrim.
My characters usually go with white since I often take the route that they are compelled by the daedra to do the quests when they come across them, so it wouldn't make sense in such cases for the character to be under a compulsion and then somehow give the artifact to someone else. Plus, I like Azura.