"a tiny pulse of light is fired into each M cone cell, one at a time. As the cells are lasered into, a magnificent turquoise patch roughly twice the size of a full moon forms in the subject's field of vision."
https://futurism.com/neoscope/scientists-hack-human-new-color
https://futurism.com/neoscope/scientists-hack-human-new-color
Comments
But they do have a separate word for 'pale blue', which is regarded as a different colour to 'blue'.
Unverified.