Instead of a mask, we could use a semi-transparent veil. Between that and androgynous features, it would be very hard for people to see what we look like without the sense of duplicity or having something to hide that is fairly frequently associated with a mask. Also, masks are a thing that are frequently closely tied to the culture of the time (i.e. Italian theatre masks) and so creating a mask without being familiar with the current styles could result in sending unintentional messages. A face-concealing veil might also have some symbolism behind it, but veils are a far less common thing than masks, and as they tend to lack the same theatric flourishes it may better help the "indistinct appearance" thing. Also, a veil would work well with somewhat diaphanous clothing, all of which would end up with an extremely ethereal and otherworldly appearance. I dig the golden eyes and lean muscle, too. Deep gold, as you say, somewhere between the color of honey and amber.