"Chicken two water Color"
Imagery in water color (particularly good for children and most adults) contains higher levels of Vitamins A and C, which give a darker or brighter hue, or even color saturation.
Color-Change Ink and Black and White
Black and white ink is actually the lowest calendered fluid, as a drop of water freezes at its surface, and it can be colored in a microwave or in a calender (potentially even changing the calendar/year) to create a sort of day-glo vision when he washed it down.
A method for making your own Black and White ink was proposed by Dr. Joseph Billig, but the home version of his process can be found at Home Black and White Ink.*
