It's no secret to at least Miss Japanese Pumpkin over there that I'm struggling with my screentone.
So Instead of saying "Feel the force of the screentone, Miss Sheep--just feel the force" I went into my left brain to solve my right brain problems. (Also known as, did you see my Panel Layout tutorials? Same thing.)

Anyway, stuck as I was, I heard a website psychologist talk about color, so I hit her up with my question because it really does bother me, how does value (thus the black and white scheme) contribute to how we see and think about color? And can I use that for my screentoning?
The answer is yes... and here are the papers that Nathalie Nahai (The Web Psychologist--not the first hit on your google search.

) gave me:
[link][link][link]It'll take me a while to breed it into an applicable basis for screentone, but I'm really excited to see if I can get my brain hemispheres to cooperate so I don't go, "Well, that doesn't *feel* right" *only*, but also, "It doesn't feel right, but I know why."
You check it out too? Someone rich enough to get the PDF? *.*
Value:

Value conveys depth perception.

Change in value can lead in change in mood.

Value conveys negative space the fastest.

Value contributes to how we see shape. (We approximate contours rather than perceive the contour.)
Color v. Black and White:

Unpleasant pictures in black and white are considered slightly less disturbing.

The speed with which people perceive a scene in color v. black and white is the same.

However, in detailed pictures, color becomes critical. (Has to be placed well--for example, it may be more disturbing to have a black and white picture with only red for the blood--a technique used a lot in films and on TV.)

In most cases, though color doesn't seem to communicate as much information as shape. (Which is consistent with what I know from other studies.) (Also known as use your negative space well.