I just explained this to Master, and I think it's a good way to explain my head.
When I am feeling healthy, good, etc, my head is white, calm, and if anything bad comes in, I tend to analyze it, and put it through a certain white door, to put it in a safe place and learn from it.
When I am feeling depressed, bad, and uncontrolled, my head turns into a rainbow of colors, actions, and sounds. All over the place. If something bad comes in, it stays, gets crowded, and never leaves.
My senses feel overloaded.
The rainbow in my head is how I feel now.