The tags were blue general tags by default when you created them, but you can change them to characters with the character: prefix (eg. "character:sensei_(yokohama_kaidashi_kikou)"). I changed those 3 tags.
I was wondering why I wasn't finding anything when I was looking through the forum to see if anybody else had made a similar request. But I felt it was better to ask then to just flop around not knowing.