Colors generated by the iPad app Colors by Number
Random color sets generated by Colors by Number (iPad version 1.2.4)
If one says “Red” (the name of a color) and there are 50 people listening, it can be expected that there will be 50 reds in their minds. And one can be sure that all these reds will be very different.
— Josef Albers, Interaction of Color, Yale University Press, 1963