A color conundrum!

From the additive color theory experiments, I learned that although cyan, magenta, and yellow are secondaries in the additive system; they can also be used subtractively in screen printing. I found it interesting that the CMY triad can be used with either theory. I also gained a lot more respect for the lighting specialists involved in theater and stage productions. Since light is energy, it must be incredibly difficult to get the power supplies on the lights to stay at a constant level (remember when the batteries in one flashlight were low?) which needs to be relative to the other lights.

During the subtractive color theory experiments, I learned that certain hues may not form usable secondary and tertiary colors. I had never thought about the conflict between the green in a blue and a red when I'm trying to make a purple.

My only real question is from the reading. The book stated that warm and cool divisions can be entirely subjective and personal, which lead me to start thinking about perception and the way we perceive color (in our brains not in our eyes). Do we organize the colors we see instinctively or because we have all been exposed to color wheels, rainbows, and the ROY G BIV acronym?