Value differences in painting always cut in; color differences always go side by side. Laterally. Color differences can illustrate three dimensional … - Kenneth Noland

It's a simple fact, when you move from one color space to another color space, that if there's a value contrast you get a strong optical illusion. Strong value contrast can be expressive and dramatic. Like the difference between high or low volume or the low key and the high keys on the piano.. .Actually, if you're moving from one flat color to another flat color, if there's a difference of color – if one is matte and the other is shiny – that contrast of tactility can keep them visually in the same dimension. It keeps them adjacent – side by side.. .Another reason is that a matte color and a shiny, transparent color are emotionally different. If something is warm and fuzzy and dense we have a kind of emotional response to that. If something is clear and you can see through it, like yellow or green or red can be, we have a different emotional sensation from that. So there's an expressive difference you can get that gives you more expressive range.

I believe that there are varying points of contact. You have to be able to see the whole thing first. All great paintings are sculptures – there's so much of the factualness about it that a great painting forces you into a visual, physical movement of yourself. That's what determines the way you experience a painting kinetically. You move closer, you sight down it, you till your head, you step back, you feel as though you are in it. That being in it is just as important as looking from a distance.

In the 1950's there was a kind of agreement that a good artist would do something in his picture that acknowledge the edge, but it was a question of doing something when you got to the edge. Cropping was something new. It came from photography and from Clement Greenberg. It was resisted as being too easy.