Back in college I took an art class that discussed in depth how we perceive colors. I specifically remember being shocked when the professor held up a color swatch next to another color, then swapped the color it was adjacent to. Before my eyes, the original color changed. It really showed the importance of context. This link discusses how context plays a great role in what we see and how we take it in. The TED talk is fantastic and really hits upon optical illusions and how we see. This has always been fascinating to me. Lighting and set design can only take a movie so far, it’s up to the Colorist to take it to the next level and really drive home the desired emotional intent.