However, it is possible to make certain assumptions as to the width of color band perception because band size can be objectively measured. For example, if a color palette with a wide array of colors is presented to a test group, the number of separate and distinct colors identified by each can be determined and expressed numerically.
“For example, if a color palette with a wide array of colors is presented to a test group, the number of separate and distinct colors identified by each can be determined and expressed numerically.”
Yes, but—quite obviously—we have no subjects from antiquity, so I’m left wondering how they can make that assertion.