As a kid I experimented with color using my Mom's food coloring. I'd pour a big glass of water and start mixing colors: red and yellow to get orange, blue and yellow to get green, or red and blue to get purple.
I'd alter the ratio of one color or another to get different results until the water got muddy. Then I'd dump out the contents of the glass and start all over. I ran out of yellow first. Then I ran out of red. With only blue left, I moved on to playing with vinegar and baking soda, but I digress. That had nothing to do with color.
This week my Color Basics class at Glad's finished up it's last session. My students now know why yellow is the first food coloring to go and blue is the last one standing.
This fall I will be teaching the Color Club class at Glad's. The color experimentation will continue!