Colors without names is an experiment from Yusuke Imai and Ayami Moteki.
They tried to make, and sell, a set of colors without specify the names.
For every tube the print the amount of primary tint: some yellow, a bit of blue and no red at all.
The do it to taech kids to not tink at green but a blue+yellow. It’s too much intellectual? Could kids figure out subctractive synthesis or they just look at the green grass, brown wood and violet flowers?