Students creating their own colors
My high school students made their own color wheels using only Blue, Yellow, Red, Black, White.
I was very glad another teacher gave me the direction to follow this order of ingredients when creating tints, shades, and tones:
Tint: Add color to white (adding white to the color wastes more paint)
Shade: Add black to color (adding black to the color wastes more paint)
Tone: Add grey to color
Then they made an attempt to match colors on a paint chip strip. Still, only using primary colors and black & white. I told them they could keep painting over their colors as many times as they wanted before the bell rang. Most kept making corrections until time was up. It was fun to watch.