Unusual skin shades and character creation

Hi all.

I’m trying to create a 1/2 orc 1/2 human female. I’ve defined a custom skin tone as follows:

Muted green-gray, the color of storm clouds over a forest. The tone is uniform across her body, though slightly darker on her hands and face from sun exposure. There is no warmth or flush beneath the surface — her skin holds a cool, earthy undertone. In shadow, she appears almost gray. In direct light, the green becomes more apparent, especially across her shoulders and the bridge of her nose. The texture is smooth on her cheeks and forehead, rougher along her jaw and knuckles.

The problem is that the skin color is never applied consistently upon image creation. I’ve tried pasting this description when creating images, and have stressed that image generation should apply this description to all exposed skin, but I mostly get images where a face is highly detailed, but the body is either not colored at all (appearance of normal skin). I’ve seen models with unusual skin colors consistently applied so I’m sure it’s possible.

Any help is greatly appreciated.