Frankly, I don't give a damn, but I will give my opinion anyways. I think they should let teachers grade with the color red because, as leerock said, "The color red demands attention and should be used to teach children competition and purpose." On another note, not letting teachers grade with red because it makes the child feel pained or saddened is redundant. It's just a freaking color of ink you use to write and/or grade with for christ sakes!!
My momma always told me, 'stupid is as stupid does.'