Authors:

It's untrue to say the colors I use are not those of reality. They are real: The red I use is red; the green, green; blue, blue; and yellow, yellow. It's a matter of arranging them differently from the way I find them, but they are always real colors. So it's not true that when I tint a road or a wall, they become unreal. They stay real, though colored differently for my scene.

Source: scrapsfromtheloft.com
It's untrue to say the colors I use are not those of reality. They are real: The red I use is red; the green, green; blue, blue; and yellow, yellow. It's a matter of arranging them differently from the way I find them,