It sounds as if they know. And they likely at this point see it as just a harmless kink, as in, "He likes girlie things, wink, wink, elbow nudge". A lot of women are OK with CDing behavior, as long as it isn't their partner.
Do they know that you get mani-pedis? Do you show an interest in makeup and fashion at work? Are your fingernails on the longer side and are your eyebrows well trimmed? Do you trim your arm hair? Have you ever worn just a trace of makeup to work, or an item of clothing from the women's department that you felt was androgynous-looking enough to not be detected?
It sounds as if you would like them to know. You might consider telling them if you feel that the telling will not bring about negative consequences, and if they can be relied upon to keep it to themselves.
