Some systems describe the Ethereal type as the most "yin" -- a synonym often used for "feminine." But I don't think that's accurate.
Physically, the Romantic type -- not the Ethereal -- most closely embodies a physical form with exaggeratedly estrogenized features. So Romantic, I think, comes closest to being the most feminine type. Romantic is certainly the most womanly type.
Faded-looking, subtly colored hair and skin read as Ethereal, for a few reasons:
- Subdued colors suggest age, since human coloring naturally fades with age. So muted coloring helps create the ancient or timeless quality that Ethereals have.
- As objects move farther away in our vision, they appear less saturated. So people of low saturation often have the Ethereal quality of seeming to retreat or fade into the distance.
- Misty coloring on an Ethereal contributes to the impression that she is a misty entity, only partially present on this plane.