I told a GG colleague that I was a CD - she had more or less figured it out because she spotted the subtle nail polish I wear. After I came clean and told her why I wear nail polish, she asked if she could see a picture. I showed her one from my most recent outing and her reaction was "wow, you go all out. I never would have recognized you!" That comment alone made me feel good - and the fact that she didn't even flinch when I told her.
So I now have a another person I can talk with from time to time :-)