I don't believe that I'm afraid.
You may have had very nice normals, but to an experienced eye there is no way a normal is going to look just like a fire or ghost.
I've seen hundreds of normals ranging from burnt orange and chocolate brown to milk chocolate and cream, but you can easily tell a fire apart if you know what to look for. Same with a ghost. I have a very faded normal female who happened to come from a line of ghosts but never proved out. To a beginner, yes I could pass her off as a ghost if I were dishonest. But anyone who knows what they are looking at would never mistake her for a ghost, even as light as she is.
Gale