No one has actually said, "I am offended by your picture," but I have gotten a couple of remarks like, "What's that picture supposed to be?" and "um, I am not sure you want to keep that pic for your team, may be considered non-pg"-- not a whole horde of comments, just a couple.
The picture in question is one of a die (as in singular form of "dice") carved from ivory. I think it is from IV century AD Rome, but there were knock-offs very much like this made in Germany in the 1400s. One site said that it [a pair of knock-offs] was a set of Adam and Eve.
It came from the cover of a book on dice. I looked for a picture that represented both "lady" and "luck" to go with the name Fortuna (inspect Fortuna and you'll see the pic), and this is what I came up with.
I don't understand how a game piece which could represent Eve--or not, in which case it is probably older than most nations on the planet--could be offensive, but there are many things in this universe that I don't understand. Can I get an official "we don't care" from an adminly type person? I'd hate to have to take it down, but I don't want to be banned or something...